S8 Series

Android Car Stereo Operation Manual

© 2025 ATOTO Corporation

V2025.1

Preface

Thank you for choosing ATOTO

With over a decade of expertise in automotive electronics, ATOTO remains committed to its core philosophy: “Different. Better. Trusted.”

• Different – We deliver products that stand apart through thoughtful design, innovation, and user‑oriented features.
• Better – We integrate professional audio‑visual technology with intuitive interaction to elevate every journey with superior experiences at an accessible price.
• Trusted – Endorsed by millions of users worldwide, ATOTO has earned a reputation for reliable products and responsive service you can count on.

This philosophy guides everything we do—from long‑term R&D investment, to continuous product improvement, to prompt customer support. With ATOTO, you can always expect something different, something better, and above all, something trusted.

Copyright Notice

All copyrights and related intellectual property rights of ATOTO Android head unit manuals (both electronic and printed) are the exclusive property of ATOTO. No part of this manual may be reproduced, distributed, adapted, translated, mirrored, or reposted for commercial use, or shared with third parties, without prior written permission from ATOTO.

Permitted Use

These manuals are intended solely for customers who have purchased genuine ATOTO Android head units. Users may view, save, or print the content for personal use, provided that all copyright notices and product information remain intact. The content must not be used for technical support, marketing, training, or service activities related to non-ATOTO products.

Liability Notice

ATOTO reserves the right to take legal action against any unauthorized use, reproduction, or modification of this manual, or any infringement of ATOTO’s copyright that results in disputes, financial loss, or harm to brand reputation. For authorization requests, content citation, or technical support, please contact ATOTO via official channels (Customer Service: support@atotoglobal.com).

FCC Compliance

ATOTO declares that this product complies with the radio frequency and electromagnetic compatibility (EMC) requirements of the U.S. Federal Communications Commission (FCC).

Specifically:

This device fully complies with Part 15 of the FCC Rules and must operate under the following conditions:

1. It may not cause harmful interference;

2. It must accept any interference received, including interference that may cause undesired operation.

Customer Support

If you experience any issues during installation or use, our support team is here to help.

Contact us via email: support@atotoglobal.com

Chapter 1 Important Information

1.1 About This Manual

To ensure proper use of your new ATOTO Android head unit, please read this manual carefully and keep it in a safe place for future reference.

For installation tutorials and guides for ATOTO S8 Series head units, visit the dedicated Installation section on our Eproductcare website: https://www.eproductcare.com/. You can also scan the QR code provided in the QR Code Manual or directly on your S8 unit to access online resources. Tap the purchased S8 model and select Installation to view the installation guide. These resources will help you set up and start using your device quickly.

Important Notes

1. This manual applies to all ATOTO S8 Series head units, except the S8 Pro New version for BMW, Mercedes-Benz, and Audi. Newly released S8 models may include additional features not mentioned here.

2. Accessories and back panel layouts may vary slightly depending on the model and region, but system functions, UI, and hardware information remain consistent.

3. Screenshots in this manual may differ slightly from your current display due to ongoing firmware and feature updates.

4. ATOTO may release new system updates, which could include changes or new features not listed in this manual.

5. If you have questions or encounter issues not covered in this manual, please contact customer support for assistance. 

1.2 Operation Warnings

1.2.1 Safety Information Before Use

To protect your safety and prevent hazards such as fire or electric shock, please observe the following precautions. Take immediate action if any abnormal product behavior occurs.

1. Prevent Short Circuits and Electric Shock

• Do not place metal objects

Do not put coins, tools, or other metal items inside the unit. Metal contact may cause a short circuit and damage the product.

• Keep liquids away

Do not expose the unit to water or other liquids. Liquid contact may cause overheating, smoke, electric shock, or other serious risks to safety.

• If liquid or objects enter the unit
  • Park your vehicle safely and turn off the ignition (ACC OFF) to cut power.
  • Contact ATOTO Customer Service or your dealer for professional assistance. 

2. Take Immediate Action for Abnormalities

• Stop using the unit immediately if it malfunctions, as continued use may cause permanent damage, fire, or safety risks.
• If the unit emits smoke, unusual sounds, odors, or shows abnormal display behavior:
  • Turn off the power immediately.
  • Contact ATOTO Customer Service or your dealer for help.

1.2.2 Important Safety Information for Driving

To ensure personal safety, please read and fully understand the following instructions before using this product while driving.

1. Comply with Traffic Laws

Always follow safe driving practices and local traffic regulations. If adjustments are needed, park in a safe location, secure the vehicle, and engage the parking brake before operating the product.

2. Stay Focused on the Road

Do not stare at the screen or operate the system while driving. Make adjustments only when the vehicle is safely stopped.

3. Observe Road Conditions

Operate the product only under safe road conditions and always comply with traffic restrictions and actual road situations.

4. Avoid Extended Operation While Driving

Do not perform prolonged operations while the vehicle is moving. Stop completely and park in a safe place before doing so.

5. Control Volume Levels

Keep audio at a reasonable level. Excessive volume may prevent you from hearing emergency sirens, road warnings, or may cause hearing loss.

6. Do Not Watch Videos While Driving

Watching or operating video functions while driving is strictly prohibited. Such distractions may cause accidents. The manufacturer is not responsible for any injury, loss, or damage resulting from unsafe use.

7. Minimize Interaction While Driving

Do not input text, adjust complex settings, or operate navigation functions while in motion. Perform these actions only when parked safely.

8. Mind Environmental Conditions

Avoid operating the product in extreme temperatures, under heavy vibration, physical impact, or water exposure, as these may cause malfunction or damage.

9. Prevent Battery Drain

Use the product only when the vehicle engine is running. Using it with the engine off may discharge the battery. Do not install this product in vehicles without an ACC circuit or dedicated power line.

1.3 Screen Use and Maintenance

This product features a capacitive touchscreen, similar to those found in smartphones. Please handle it with care and follow the guidelines below for proper use and maintenance.

1.3.1 Touchscreen Usage Guidelines

• Do Not Operate with Wet Fingers

Moisture (sweat or water) may affect touch sensitivity and cause malfunction.

• Avoid Prolonged Sun Exposure

Do not leave the screen under direct sunlight for long periods. Excessive heat may cause damage or malfunction.

• Use Gentle Touch

Operate with light fingertip touches. Excessive pressure may damage the screen.

• Keep Away from Sharp Objects

Do not use pens, styluses not designed for capacitive screens, or other sharp objects to prevent scratches or cracks.

1.3.2 Screen Cleaning Instructions

1. For light dust or dirt, wipe with a soft, dry cloth (e.g., microfiber or silicone cloth).

2. For stubborn stains, lightly dampen a soft cloth with a neutral detergent solution, wipe gently, and then dry with a clean, soft cloth.

3. Clean the screen only when the device is powered off, cooled down, and not exposed to direct sunlight.

Important Notes:

Do not use ammonia, glass cleaners, abrasive powders, or any household chemicals.

Do not spray cleaning solutions directly on the screen.

Avoid alcohol, thinners, volatile solvents, or hard fabrics, as they may scratch the surface or erase printed text.

1.4 Notice

• Apple CarPlay is a trademark of Apple Inc.
• iPhone® is a trademark of Apple Inc., registered in the U.S. and other countries.
• Use of the Apple CarPlay logo indicates that this product’s user interface meets Apple performance standards.
• Apple Inc. is not responsible for the operation of this device or its compliance with safety and regulatory requirements.
• ATOTO is not affiliated with Apple Inc.

• Android Auto is a trademark of Google LLC.

• The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc., and any use of such marks by ATOTO is under license.
• All other trademarks and trade names mentioned are the property of their respective owners.

Chapter 2 Physical Hardware Overview

2.1 Front Panel Design

The design of the front panel may differ depending on the S8 model. In general, four basic front panel layouts are available. Please refer to the specific design of your model for exact details.

Examples of Front Panel Diagram:

Installation Style: FlexView Pro SAH10DT1 — 10.1″ Floating, Soft-Touch Back-Lit Keys

(e.g., S8G1104MS)

Installation Style: FlexView Pro SAH10DP2 — 10.1″ Floating, Physical Buttons + Volume Knob

(e.g., S8G1104PMS)

Installation Style: UDH07D — 7″ Double-DIN, Physical Keys (Medium “M” Chassis)

(e.g., S8G2A79UN)

Installation Style: EdgeFit™ IAH09D — 9″ Flush-Mount

(e.g., S8G2099UN)

Installation Style: UDH07FDT — 7″ Double-DIN, Fully-Laminated Touch Keys (Short Chassis)

(e.g., S8G2C74MS)

2.2 Installation Styles

ATOTO S8 Android head units are available in different installation styles. Each style has unique features, allowing you to choose the one that best suits your vehicle's dashboard layout, look, and usability.

Available Installation Styles:

1. UDH07D — 7″ Double-DIN, Physical Keys (Medium “M” Chassis)

• OEM-like face with real buttons for eyes-off control; some variants include dual built-in microphones
• No native HDMI-in
• Examples: S8G2A74MS (MS), S8G2A79UN (UN)

2. UDH07FDT — 7″ Double-DIN, Fully-Laminated Touch Keys (Short Chassis)

• Clean glass front, short depth for tight dashes/cable space
• No native HDMI-in
• Examples: S8G2C74MS (MS), S8G2C79UN (UN)

3. EdgeFit™ IAH09D — 9″ Flush-Mount

• Hugs the factory bezel; avoids the bulky “floating tablet” look
• 50 mm ultra-short body leaves room for harnesses, CAN/data interfaces, amps/DSPs
• No native HDMI-in on this style (use a HDMI-to-USB adapter if needed)
• Examples: S8G2094MS (MS), S8G2099UN (UN)

4. FlexView Pro SAH10DT1 — 10.1″ Floating, Soft-Touch Back-Lit Keys

• 9-way adjustment (deptH, height, lateral, swivel ±30°, tilt ±10°) to clear vents/hazard/shifters; lock after install
• UN variants add HDMI-in
• Examples: S8G1104MS (MS, no HDMI-in), S8G1109UN (UN, HDMI-in)

5. FlexView Pro SAH10DP2 — 10.1″ Floating, Physical Buttons + Volume Knob

• Same 9-way adjustability; tactile controls for bumpy roads or gloves
• UN variants add HDMI-in
• Examples: S8G1104PMS (MS, no HDMI-in), S8G1109PUN (UN, HDMI-in)

6. FlexView Pro SAH29DP — 12.95″ Floating, Physical Buttons + Volume Knob

• Cinematic width with the same 9-way adjustment; confirm dash clearance
• UN adds HDMI-in
• Example: S8G1299PUN (UN, HDMI-in)

2.3 Rear Panel Ports

The rear panel layout of your S8 head unit varies by model, but port functions are generally consistent.

Examples of Rear Panel Diagram:

S8G1104MS

S8G1109UN

S8G2A79UN

A. MS Variants (Examples: S8G1104MS, S8G1104PMS)

1. 15A Power Port

Supplies power to the S8 head unit.

2. RCA AV In/Out Port

• Provides multi-channel audio output and AV (audio/video) input.
• Includes Bluetooth antenna input.

3. USB Port (External Storage & Phone Link)

• Supports external storage for camera recording and file expansion.
• Enables wired Apple CarPlay, Android Auto, and Phone Mirroring.

4. MIC Port

Connects an external microphone to improve voice input quality.

5. AC44F Wireless Remote Port

Connects a compatible ATOTO steering wheel controller (SWC).

6. GPS/4G/Wi-Fi Antenna Port

Connects GPS, 4G mobile network, and Wi-Fi antennas.

7. FM Antenna Port

Connects FM antenna for radio reception.

B. UN Variants with HDMI (Examples: S8G1109UN, S8G1109PUN, S8G1299PUN)

1. 15A Power Port

Supplies power to the S8 head unit.

2. RCA AV In/Out Port

• Provides multi-channel audio output and AV (audio/video) input.
• Includes Bluetooth antenna input.

3. Mini HDMI-IN Port

Allows high-definition video and audio input from external devices.

4. USB Port (External Storage & Phone Link)

• Supports external storage for camera recording and file expansion.
• Enables wired Apple CarPlay, Android Auto, and Phone Mirroring.

5. MIC Port

Connects an external microphone to improve voice input quality.

6. AC44F Wireless Remote Port

Connects a compatible ATOTO steering wheel controller (SWC).

7. GPS/4G/Wi-Fi Antenna Port

Connects GPS, 4G mobile network, and Wi-Fi antennas.

8. FM Antenna Port

Connects FM antenna for radio reception.

C. 7″ Double-DIN & EdgeFit (Examples: S8G2A74MS, S8G2A79UN, S8G2094MS, S8G2099UN)

1. 15A Power Port

Supplies power to the S8 head unit.

2. RCA AV In/Out Port

Provides multi-channel audio output and AV (audio/video) input.

3. AC-FCR04W Front Recording Camera Port

Connects ATOTO AC-FCR04W front recording camera.

4. Multi-Purpose Port

Connects to a CAN Bus decoder or provides rear channel audio output.

5. Phone Link Port

Connects to a smartphone via USB cable for wired CarPlay/Android Auto/Phone Mirroring.

6. External Storage Port

Connects to a USB storage device.

7. RCA AV In + Antenna & Parking Brake Port

• Provides rear camera video input.
• Includes Bluetooth and WiFi antenna input.
• Detects Parking Brake signal input.

8. FM Antenna Port

Connects FM antenna for radio reception.

9. WiFi Antenna Port

Connects WiFi antenna

10. GPS Antenna Port

Connects GPS antenna.

Notes:

• Rear panel layouts may differ by model, but port functions generally remain the same.
• On earlier S8 head units (UDH07D, UDH07FDT, and EdgeFit IAH09D installation styles), the FCAM (Front Camera In) port remains fully supported. On current units of UDH07D, UDH07FDT, and EdgeFit IAH09D installation styles, this port has been disabled. For improved front‑camera performance and stability, we recommend the AC‑FCR04W front recording camera (sold separately).
• For detailed installation tutorials:
  • Visit the Installation section on our support site: http://www.eproductcare.com
  • Or scan the QR code from the included QR Code Manual or directly on your S8 head unit.
• After accessing, tap your product model and select Installation to view setup guides.

Chapter 3 Home Screen

This section introduces the Home Screen, the primary interface of the unit. It provides quick access to essential functions, displays real-time information, and supports layout customization. The modular design is optimized for ease of use and to help minimize driver distraction.

Home Screen Layout

3.1 Home Screen Layout

The Home Screen is divided into three functional areas: the Status Bar, the Main Interface Area, and the Dock Bar.

3.1.1 Status Bar

Displays essential system information such as time, volume, and network status. It also provides quick access to brightness and volume controls.

3.1.2 Main Interface Area

• Shows the music player widget on the left and app shortcuts on the right (Web Resources, Gallery, AUX, Equalizer, SWC Setup, DVR CAM).
• Serves as the primary interaction area with a card-based layout for clear information display and quick access.
• Supports customization: rearrange widgets and shortcuts to create a personalized layout.

3.1.3 Dock Bar

Provides quick shortcuts to commonly used functions. The center App Drawer icon opens the full list of installed apps, organized across multiple pages for easy browsing.

3.2 Quick Settings Panel (Control Center)

The Quick Settings Panel serves as the integrated control center. Swipe down from the top of the Status Bar to open it. It provides fast access to frequently used functions, including WiFi, mobile data, equalizer, screen brightness, and notifications.

Quick Settings Panel (Control Center)

Touch Buttons Icons and Their Functions:

1. WiFi Button

• Tap to enable or disable WiFi connection.
• Press and hold to open WiFi Settings.

2. Eye Comfort Button

• Tap to reduce blue light emission.
• Press and hold to open Eye Comfort Settings.

3. Mobile Data Button

Tap to enable or disable mobile network data.

4. EQ (Equalizer) Button

Tap to open EQ settings.

5. Screenshot Button

Tap to capture a screenshot of the current screen.

6. Clean Memory Button

Tap to free system memory and improve performance.

7. Gallery Button

Tap to open the Gallery app.

8. Reboot Button

Tap to restart the system.

9. Settings Button

Tap to enter System Settings.

10. Brightness Slider

Tap or drag to adjust screen brightness.

11. Notification Center

Displays recent messages, alerts, and system or app notifications.

Chapter 4 Bluetooth Connection

This chapter introduces the dual Bluetooth functionality (Bluetooth 1 and Bluetooth 2), which provides two independent channels that operate without interference.

• Bluetooth 1 is dedicated to connecting mobile devices such as smartphones.
• Bluetooth 2 is designed for file transfers, connections with Bluetooth-enabled accessories (e.g., ATOTO CI-FLT01 Interior Footwell Lights, ATOTO AC-4450 Mini OBD II Diagnostic Tool), and Bluetooth tethering.

4.1 Hands-Free Bluetooth (Bluetooth 1)

Bluetooth 1 is dedicated to mobile device connectivity, supporting hands-free phone calls, music playback, and auto screen lock for privacy protection.

Primary Uses:

1. Hands-Free Calls – Make and receive phone calls safely while driving.

2. Music Streaming (A2DP: Advanced Audio Distribution Profile) – Stream high-quality audio from smartphones or other compatible devices. (Note: On select S8 models, Bluetooth 1 supports aptX & aptX HD codecs for enhanced sound. To enjoy these, your smartphone must also support aptX/aptX HD.)

3. Auto Screen Lock – Automatically unlocks the screen when a paired Bluetooth device (e.g., your phone) is nearby and locks it when the device is out of range (if configured in Screen Lock settings). For detailed Screen Lock setup, see Section 37.3.

Operation Steps

Step 1: From the Home Screen, tap the "(App Drawer icon) to open the apps list and select the Bluetooth 1 app.

Step 2: Tap the "(Bluetooth Phone icon)", then the "(Bluetooth Settings icon)" to view the car stereo's Bluetooth name.

Step 3: Enable Bluetooth on your phone.

Step 4: Find the car stereo's Bluetooth name on your phone and tap it to pair.

Step 5: Confirm pairing by tapping Pair and following any on-screen prompts.

Step 6: Once connected, your phone's name will appear in the Paired Devices list.

4.2 System Bluetooth (Bluetooth 2)

Bluetooth 2 supports both data transmission and Bluetooth Low Energy (BLE) connections. It allows seamless pairing with a variety of Bluetooth-enabled devices such as OBD2 diagnostic tools, keyboards, mice, gamepads, and ambient lighting. This feature also supports Bluetooth tethering, enabling your phone’s internet connection to be shared with the head unit for easy online access while driving.

Primary Uses:

1. File Transmission – Transfer files between your phone and the head unit.

2. BLE Device Connection – Pair with Bluetooth-enabled devices like OBD2 tools, keyboards, mice, ambient lighting, etc.

3. Bluetooth Tethering – Share your phone’s internet connection with the head unit.

Operation Steps (Android Phone)

Step 1: Turn off WiFi on both your phone and the head unit.

Step 2: On your phone, enable Mobile Data, Bluetooth, and Bluetooth Tethering.

(Settings path may vary: Settings > Connection & Sharing > Personal Hotspot > Bluetooth Tethering)

Step 3: From the Home Screen, tap the "(App Drawer icon)" to open the apps list and select the BT-2 app.

Step 4: Tap the "(Bluetooth 2 icon)" to open Bluetooth 2 settings on the head unit.

Step 5: Tap Pair new device to search for available devices.

Step 6: Select your phone from the Available devices list and tap it to pair.

Step 7: Enable Internet access for Bluetooth tethering.

Step 8: Verify the internet connection by opening a website using the Chrome browser on the head unit.

Operation Steps (iOS Phone):

Step 1: Turn off WiFi on both your phone and the head unit.

Step 2: Enable Bluetooth, Mobile Data and Personal Hotspot on your iPhone.

Follow steps 3-8 as outlined for Android phones.

4.3 Important Notes

1. Connection – The connection status may fluctuate. As long as internet access is available, Bluetooth tethering remains functional.

2. App Recognition – Some applications may not detect the Bluetooth tethering connection. Please consult the app developer for support if needed.

3. Compatibility – Ensure that the Bluetooth versions of the S8 head unit and connected devices are compatible to enable all intended features.

4. Version Details – For specific Bluetooth version information of this S8 Android head unit, refer to Chapter 39: Technical Specifications.

Chapter 5 Internet Connectivity Options

The S8 offers four methods for connecting to the internet. Select the option that best suits your needs, driving scenario, and data plan:

1. WiFi – Connect to an external Wi-Fi network or mobile hotspot.

2. 4G (Nano SIM Card) – Insert a Nano SIM card with an active mobile data plan directly into the head unit.

3. Bluetooth Tethering – Share your smartphone’s internet connection via Bluetooth.

4. USB Tethering –Share your smartphone’s internet connection using a USB cable.

5.1 WiFi Connection

The S8 Android head unit supports both 2.4GHz and 5GHz WiFi networks.

Operation Steps

Step 1: Create a Hotspot

Use your smartphone or a portable router to set up a WiFi hotspot.

Step 2: Enable WiFi

On the head unit, go to Settings > WLAN and enable Use Wi-Fi.

Step 3: Select Network

Choose your WiFi network name from the list of available networks.

Step 4: Enter Password

Input the WiFi password and tap Connect.

5.2 Mobile Network

The S8 Android head unit provides a cellular network connection through its built-in 4G module when a Nano SIM card with an active data plan is inserted. This option is ideal for Wi-Fi-free environments..

Prerequisites & Important Notes:

1. SIM Card Type: S8 uses a Nano SIM card.

2. Data Plan: An active data plan from a compatible local carrier is required.

3. Activation: Activate the SIM card on a phone before using it with the S8.

4. PIN Code: Remove or disable the SIM PIN on another device, as the S8 cannot unlock it.

5. Insertion: Insert the Nano SIM card into the SIM slot in the correct orientation before powering on the S8.

6. Carrier Compatibility: Some carriers may not support the S8’s IMEI (e.g., certain Verizon SIMs). Check with your provider.

7. IoT SIM Requirement: Use an IoT SIM card for optimized data communication and better network stability. (Note: IoT SIM cards support data only, not calls or SMS.)

How to Enable Mobile Network

Operation Steps

Step 1: Power off the S8, insert the activated and PIN-disabled Nano SIM card, then power it back on.

Step 2: Go to Settings > WLAN > ... More > Mobile Network.

Step 3: Toggle Mobile data on. If needed, also toggle Roaming.

How to Enable Mobile Hotspot (Share S8's Mobile Data):

The S8 can act as a WiFi hotspot when an active SIM card is inserted.

Operation Steps:

Step 1: Go to Settings > WLAN > ... More> Hotspot & tethering.

Step 2: Toggle WiFi hotspot on. Configure the hotspot name (SSID) and password as desired.

5.3 Bluetooth Tethering

Bluetooth Tethering allows the S8 head unit to access the internet using your phone's mobile data using a Bluetooth link. This option is useful when WiFi or SIM card data is not available.

Operation Steps

For Android Phone:

Step 1: Turn off WiFi on both your phone and the head unit.

Step 2: On your phone, enable Mobile Data, Bluetooth, and Bluetooth Tethering

(Typical path: Settings > Connection & Sharing > Personal Hotspot > Bluetooth Tethering).

Step 3: On the head unit, go to the Home Screen and tap the "(App Drawer icon)" and open the BT-2 app.

Step 4: Tap the "(Bluetooth 2 icon)" to enter Bluetooth 2 settings.

Step 5: Select Pair new device to search for available devices.

Step 6: Choose your phone's Bluetooth name from the Available devices and tap to pair.

Step 7: Enable Internet access for Bluetooth tethering.

Step 8: Test the connection by opening a website in the Chrome browser on the head unit.

For iOS Phone:

Step 1: Turn off WiFi on both your phone and the head unit.

Step 2: On your phone, enable Bluetooth, Mobile Data and Personal Hotspot.

Follow steps 3-8 as outlined for Android phone.

5.4 USB Tethering

USB tethering allows the S8 head unit to share your phone’s mobile data via a USB cable. This method provides a more stable and faster internet connection compared to Bluetooth tethering.

Operation Steps

For Android Phone:

Step 1: On your phone, locate Developer Options and enable USB Debugging.

Step 2: On the S8 head unit, open the CarbitLink app (or EasyConnection on earlier S8 models).

Step 3: Scan the QR code displayed on the S8 screen to download and install the app on your phone.

Step 4: Connect your phone to the S8 head unit using the original USB cable and approve any prompts on your phone.

Step 4: Launch the CarbitLink app (or EasyConnection on earlier S8 models) on both the head unit and your phone.

Step 6: Test the internet connection by opening a website in the Chrome browser on the head unit.

For iOS Phone

Step 1: On the S8 head unit, open the CarbitLink app (or EasyConnection on earlier S8 models).

Step 2: Scan the QR code to download and install the app on your iPhone.

Step 3: Connect your iPhone to the S8 head unit with the original USB cable and approve any prompts.

Step 4: Launch the CarbitLink app (or EasyConnection on earlier S8 models) on both the head unit and your iPhone.

Step 5: Verify the connection by browsing a website using Chrome on the head unit.

Notes:

• Once USB tethering is active, screen mirroring runs in the background, without interrupting internet connectivity.
• Always use the original USB cable for stable data transfer.
• Compared to Bluetooth tethering, USB tethering generally provides higher speed and stability.

5.5 Important Notes

1. Network Frequency Bands

• S8 Android head unit models with “-N” are designed for North America (USA, Canada, Mexico).
• Models with “-A” are for Europe, Asia, and other regions.
• Please confirm with your mobile operator whether the frequency bands are supported in your area.

Supported 4G Bands:

• “-N” Models: B1, B2, B4, B5, B7, B8, B12, B13, B17, B19, B25, B26, B38, B41
• “-A” Models: B1, B2, B3, B7, B8, B19, B20, B25, B26, B28A, B28B, B34, B38, B39, B40, B41

2. The S8 Android head unit requires the above bands to access the network. Availability also depends on your carrier’s base station coverage in your location.

3. Even with GSMA certification, some carriers may reject the unit’s IMEI.

• Note: Verizon SIM cards are known to be incompatible.

4. For detailed LTE band information,check Wikipedia's LTE frequency bands page. (https://en.wikipedia.org/wiki/LTE_frequency_bands)

5. Data usage can be checked via your carrier’s app or website.

• The S8 does not support phone calls.
• SMS verification codes can be received using the unit’s built-in Messages app.

Chapter 6 Car Link 2.0 App (For Apple CarPlay & Android Auto Connectivity)

The Car Link 2.0 app provides both wired and wireless connection between your iPhone or Android smartphone and the S8 Android head unit. It brings essential phone functions—such as navigation, calls, music, and voice assistant—directly to the stereo, making driving safer and more convenient.

Key Features

1. Dual Platform Support

Works with both Apple CarPlay (iPhone) and Android Auto (Android phones).

2. Flexible Connectivity

Connect via USB cable, or wirelessly through WiFi + Bluetooth.

3. Smartphone Integration

Access apps like Apple Maps, Google Maps, Spotify, Apple Music, as well as phone calls, messages, and voice assistants (Siri, Google Assistant).

4. Voice Control

Hands-free operation with voice commands such as “Hey Siri” or “Hey Google”.

5. Native Touch Operation

Fully compatible with the S8 head unit’s touchscreen, ensuring smooth, responsive, and intuitive control.

6.1 Apple CarPlay Connection

The S8 supports both wired and wireless Apple Carplay, allowing seamless iPhone integration for a safer and smarter in-car experience.

6.1.1 Compatibility

• Wired CarPlay: iPhone 5 or later with iOS 7.1+
• Wireless CarPlay: iPhone 5 or later with iOS 9.0+

6.1.2 Wired Connection Setup

Prerequisite

Ensure the vehicle is in Park (P) before starting.

Operation Steps

Step 1: Connect your iPhone to the S8 head unit using the original Apple USB cable via the port labeled Phone Link.

Step 2: Launch the Car Link 2.0 app on the head unit and approve any prompts on your iPhone.

Step 3: The CarPlay interface will appear on the screen automatically.

6.1.3 Wireless Connection Setup

Prerequisites

1. Ensure the vehicle is in Park (P).

2. Confirm that neither the iPhone nor the S8 is connected to any other WiFi or Bluetooth devices.

3. Enable Wi-Fi and Bluetooth on both the iPhone and the S8 (S8 path: Settings > WLAN > WiFi).

Operation Steps

Step 1: On the S8, open the Bluetooth Phone app, then tap the "(Bluetooth Settings icon)" to view the car stereo's Bluetooth name (default: S8).

Step 2: Tap the "(Bluetooth Connection icon)" to enable: "With this on, CP or AA is automatically launched after Bluetooth connection".

Step 3: Enable Bluetooth and WiFi on your iPhone and on the S8.

Step 4: On your iPhone, select the S8’s Bluetooth name and tap Pair. Approve all prompts.

Step 5: Launch the Car Link 2.0 app on the S8 and follow any on-screen prompts on your iPhone.

Step 6: The CarPlay interface will appear on the head unit display.

6.1.4 Important Notes

1. After initial Bluetooth pairing, the S8 will automatically connect via WiFi—you do not need to select the unit from your iPhone’s WiFi list.

2. While using Wireless CarPlay, other WiFi network connections are not available.

3. This manual covers basic setup only. For more details on CarPlay features and supported apps, visit Apple’s official site:iOS - CarPlay - Apple

6.2 Android Auto Connection

The S8 supports both wired and wireless Android Auto, allowing seamless integration of your Android phone for a safer, smarter in-car experience. Users can access navigation, calls, music, and voice assistants directly from the S8 display.

6.2.1 Compatibility

• Wired Android Auto: Available on Android phones running Android 6.0 or higher.
• Wireless Android Auto:
  • Supported on any phone with Android 11.0 or higher.
  • Supported on Google or Samsung phones running Android 10.0.
  • Supported on Samsung Galaxy S8, Galaxy S8+, and Note 8 with Android 9.0.

6.2.2 Wired Connection Setup

Prerequisites

• Ensure the vehicle is in Park (P) brefore proceeding.
• When setting up Android Auto for the first time, your phone may display a message such as “The vehicle must be parked to continue setup.”
  • This occurs because Android Auto requires the parking brake signal to confirm that the vehicle is stationary.
  • Please ensure the parking brake wire from the head unit is correctly connected to the vehicle’s parking brake circuit. If the wire is left unconnected (floating), Android Auto may not complete the setup process.

Operation Steps

Step 1: Install the Android Auto app on your Android phone. If it cannot be installed from the Google Play Store, your phone may not support Android Auto or the service may not be available in your region.

Step 2: Use your phone's original USB data cable to connect it to the car stereo via the included Phone Link USB Port.

Step 3: Tap Car Link 2.0 app on the car stereo and allow any prompts on your phone to complete the setup.

Step 4: For the first-time connection, your phone may display pop-ups—always allow these requests.

Step 5: Once setup is complete, the Android Auto Interface will appear on the S8 screen.

6.2.3 Wireless Connection Setup

Prerequisites

• Ensure the vehicle is in Park (P).
• When setting up Android Auto for the first time, your phone may display a message such as “The vehicle must be parked to continue setup.”
  • This occurs because Android Auto requires the parking brake signal to confirm that the vehicle is stationary.
  • Please ensure the parking brake wire from the head unit is correctly connected to the vehicle’s parking brake circuit. If the wire is left unconnected (floating), Android Auto may not complete the setup process.
• Both your phone and the S8 must not be connected to any other WiFi or Bluetooth devices.
• Enable Bluetooth and WiFi on your phone.
• Enable Wi-Fi and Bluetooth on the S8 (Navigate to Settings > WLAN > WiFi).

Operation Steps

Step 1: Install the Android Auto app on your Android phone. If it cannot be installed from the Google Play Store, your phone may not support Android Auto or the service may not be available in your region.

Step 2: Tap the Bluetooth Phone app on the S8 to access the Bluetooth pairing interface, then tap"(Bluetooth Settings icon)" to view the car stereo's Bluetooth name.

Step 3: Tap "(Bluetooth Connection icon)" to enable "With this on, CP or AA is automatically launched after Bluetooth connection".

Step 4: Enable Bluetooth and WiFi on both your phone and the S8.

Step 5: Find the S8's Bluetooth name (default: S8) and tap to pair.

Step 6: Tap Pair and accept all prompts on your phone to complete the Bluetooth connection.

Step 7: Tap Car Link 2.0 app on the S8 and allow any further prompts on your phone to finish setup.

Step 8: Then Android Auto Interface will display on the S8 screen.

6.2.4 Important Notes

1. For first-time use of Wireless Android Auto, ensure the Wireless Android Auto or Wireless Projection option is enabled on your phone.

2. You do not need to manually select the S8 from your phone’s WiFi list; after Bluetooth pairing, it will automatically connect over WiFi.

3. Audio Priority: Android Auto audio cannot play simultaneously with local S8 media sources (e.g., Radio, Bluetooth Music, USB/SD Card). When Android Auto is active, other sources are paused or muted. This applies to certain S8 models.

4. This section provides basic setup instructions. For full Android Auto features and usage, visit the official site:https://www.android.com/auto

Chapter 7 Phone Mirroring

The S8 Android head unit supports wired and wireless Phone Mirroring via the CarbitLink app (or EasyConnection on some earlier S8 models).

Unlike Apple CarPlay or Android Auto, which project only selected apps, Phone Mirroring displays your entire phone screen on the S8, allowing full access to apps, videos, games, and other content directly from your phone.

Key Features

1. Full Screen Mirroring: Mirrors the entire phone interface on the S8 display.

2. Wired & Wireless Support: Connect via USB cable or Wi-Fi/Bluetooth.

3. Real-Time Interaction: Operate apps, games, and multimedia on your phone in real time using the S8 touchscreen.

4. Compatibility: Works with most Android and iOS devices; app installation on the phone may be required.

7.1 Phone Mirroring for iPhone

Connect via USB

Operation Steps

Step 1: Tap CarbitLink app (or EasyConnection on some earlier S8 models) on the car stereo to scan the QR code to download the app to your iPhone.

Step 2: Use your iPhone's original USB data cable to connect it to the S8 via the included Phone Link USB Port. Trust the car stereo on your iPhone and accept any prompts.

Step 3: Open CarbitLink app (or EasyConnection) on both the car stereo and on your iPhone. Locate the car stereo's Phone Mirroring ID.

Step 4: On your iPhone, Tap Screen Mirroring, select the car stereo's ID, and the connection will be established.

Connect via WiFi

Operation Steps

Step 1: Activate your iPhone's personal hotspot.

Step 2: On the S8, go to Settings > WLAN > WiFi. Select your iPhone's hotspot from the list and enter the password to connect.

Step 3: Tap CarbitLink app (or EasyConnection on some earlier S8 models) on the S8 and locate the Phone Mirroring ID.

Step 4: On your iPhone, tap Screen Mirroring, select the car stereo's ID, and the connection will be established.

7.2 Phone Mirroring for Android Phone

Connect via USB

Operation Steps

Step 1: On your Android phone, go to Developer Options and turn on USB Debugging.

Step 2: Tap CarbitLink (or EasyConnection on some earlier S8 models) on the S8 to scan the QR code to download the app on your phone.

Step 3: Use your phone's original USB data cable to connect to the S8 via the included Phone Link USB Port. Trust the car stereo on your phone and accept any prompts.

Step 4: Open CarbitLink (or EasyConnection) on both the S8 and your phone. Locate the Phone Mirroring ID on the S8.

Step 5: On your phone, tap Screen Mirroring, select the S8's ID, and the connection will be established.

Connect via WiFi

Operation Steps

After connecting via USB, if the car stereo and your Android phone are on the same WiFi network, you can unplug the USB for wireless Phone Mirroring.

7.3 Important Notes

1. When connected via USB using CarbitLink app (or EasyConnection on some earlier S8 models), the stereo can access the internet using your iPhone’s mobile data.

2. For Android phones, the operation system must be Android 4.4 or higher.

3. Wireless Phone Mirroring over WiFi doesn't consume mobile data.

4.For the best mirroring experience, enable the Automatic Screen Rotation of your smartphone. (Some apps may not support landscape mode.)

5. On smartphones with curved screens, black edges may appear around the display. This is caused by the phone’s firmware, not the S8 or CarbitLink app.

Chapter 8 Home Screen Customization

The S8 Android head unit lets you fully customize the Home Screen to suit your preferences. You can personalize:

• App Shortcuts: Add, remove, or rearrange your favorite apps for quick access.
• Widgets: Choose and position widgets for music, navigation, or other frequently used functions.
• Wallpapers: Set your preferred background for a more personalized look.
• Dock Bar: Customize the dock bar with shortcuts to your most-used apps.

A tailored Home Screen enhances convenience, improves workflow, and makes both short drives and long trips more enjoyable.

8.1 App Shortcuts

The S8 head unit features a main Home Screen and a second Home Screen page, allowing you to add shortcuts for frequently used apps—such as navigation, music, radio, and podcasts. This provides faster, easier, and safer access while driving.

Operation Steps

Step 1: Tap the "(App Drawer icon)" to open your list of installed apps.

Step 2: Tap and drag an app to either the main or the second Home Screen page.

Step 3: Repeat for any additional apps you'd like to add.

8.2 Widgets

The S8 head unit offers a variety of widgets that you can choose and customize according to your preferences, providing quick access to key functions and information.

Operation Steps

Step 1: Tap the "(App Drawer icon)" and swipe left to view all available widgets.

Step 2: Tap and drag a widget to the main or the second Home Screen page.

Step 3: Repeat for any other widgets you want to add as long as there is sufficient space.

8.3 Wallpaper

The S8 head unit supports static wallpapers. In addition to built-in options, you can set personal photos—like selfies or pictures of your kids, parents, or pets—or download wallpapers from trusted sources.

Use Built-In Wallpapers

Operation Steps

Step 1: Navigate to Settings > Device > Display > Wallpaper.

Step 2: Select Wallpapers.

Step 3: Choose your desired image and tap SET WALLPAPER.

Notes:

• The S8 head unit currently does not support live wallpapers.
• Wallpapers can also be set via the FileManager or Gallery apps.

Use Downloaded or Personal Wallpapers

Operation Steps

Step 1: Download wallpapers from trusted sources or transfer personal photos from your smartphone, computer, or camera to the S8 head unit.

Step 2: Navigate to FileManager app > Photo Folder and locate the desired image.

Step 3: Or navigate to Gallery app and locate the image.

Step 4: Tap the image and then tap the "(Wallpaper Set icon)" to set it as your wallpaper.

8.4 Dock Bar

The S8’s Dock Bar comes pre-set, but you can customize it by adding or removing shortcuts for your most frequently used apps.

Operation Steps

Step 1: Tap and hold the app icon you want to remove until a white cross appears at the top.

Step 2: Drag the icon to the white cross. When the icon turns solid red, release to delete.

Step 3: Tap and drag a desired app to the Dock Bar.

Step 4: Repeat to add more apps as needed.

Chapter 9 DriveChat App (AI Voice Assistant)

The S8 Android head unit comes pre-installed with the DriveChat app, an innovative Al voice assistant powered by SSHub and ChatGPT. DriveChat allows you to control the S8 via voice commands and interact with multiple Al chatbots for information, assistance, or entertainment.

9.1 Introduction to DriveChat & SSHub App

DriveChat Functionality

• Control S8 functions via voice commands (e.g., music playback, navigation, settings).
• Interact with multiple AI chatbots for information, guidance, or general conversation.

SSHub Companion App (Required)

You must download the SSHub app on your smartphone (available on the App Store or Google Play) to:

1. Create and manage your ATOTO account.

2. Configure DriveChat settings (e.g., wake words).

3. Sync settings between your phone and the S8 head unit.

4. Manage optional paid features or premium AI models for DriveChat (check the SSHub app for details).

Potential Costs

• Some advanced DriveChat features or specific AI models may require purchases, which are managed through the SSHub app.

9.2 Setting Up DriveChat (Account & Wake Words)

Overall Process

Download SSHub app -> Create/Log in to ATOTO Account -> Access DriveChat (Link S8 to SSHub Account via QR Scan) -> Set Wake Words.

Operation Steps

Step 1: Download & Sign In to SSHub

1. Download the SSHub app from the App Store (iOS) or Google Play Store (Android).

2. Open SSHub and create a new ATOTO account, or log in with a supported third-party account (e.g., Google).

Step 2: Link S8 to SSHub Account

1. On the S8, open the DriveChat app (pre-installed; if missing, download via FindApps).

2. A QR code will appear on the S8 screen.

3. On your phone, open SSHub → tap Add ATOTO Device (+) → choose Scan → scan the QR code displayed on the S8.

4. Tap the Add ATOTO Device button, enter a device name (e.g., S8 Android head unit), and then tap Confirm. Your S8 is now linked to SSHub.

Step 3: Set Wake Words

1. Open DriveChat app on the S8, locate Wake-up Options and tap to enter settings.

2. Tap + New Wake Word to start the setup.

3. Tap Confirm, enter your preferred wake word, then tap Confirm again to complete the input.

4. Tap Start to begin recording the wake word. Repeat this step until a checkmark (√) appears. Then tap Confirm to finish. The wake word is now saved.

Notes:

• You must set at least two distinct wake words:
  • One for voice control (e.g., "Hey Mojo")
  • One for chatbot interaction (e.g., "Hey Piko")
• DriveChat (Al Voice Assistant) processes one request at a time. Wait until the current icommand/conversation ends before starting another.
• Recognition is strongest for the person who recorded the wake word. If multiple users share the system, each should record their own.
• Avoid common phrases/names to prevent accidental activation

9.3 Using DriveChat (Voice Control & Chatbot)

DriveChat lets you interact with the S8 head unit more safely, naturally, and efficiently while driving. It combines voice control and AI chatbot conversation for both practical use and entertainment.

1. Personalized Wake Words

• Each user can record their own custom wake words:
  • For voice control commands (e.g., "Hey Mojo").
  • For chatbot interaction (e.g., "Hey Piko").
• Custom wake words improve accuracy and reduce accidental activations.

2. Voice Control of Head Unit Functions

You can control the S8 with simple voice commands.

Examples:

User: "Hey Mojo, turn on the Radio."

DriveChat (Mojo): "Radio turned on for you."

User: "Hey Mojo, skip to the next track."

DriveChat (Mojo): "Skipping to the next track."

3. Conversational Interaction

Use DriveChat as a companion for fun and engagement.

Example:

User: "Hey Piko, tell me a joke."

DriveChat (Piko): "Sure! Why don’t scientists trust atoms? Because they make up everything!"

User: "Thanks, Piko! That was funny. Can you tell me a story about atoms?"

DriveChat (Piko): "Of course! Once upon a time in Atomville..."

4. AI Chatbot for Advice

Use DriveChat as a companion for fun and engagement.

Example:

User: "Hey Mojo, switch to novelist mode."

DriveChat (Mojo): "Switching to novelist mode."

User: "Hey Piko, how can I write a compelling novel introduction?"

DriveChat (Chatbot - Novelist Mode): "Start with an intriguing question, a vivid description, or a dramatic event..."

9.3.1 Activate DriveChat

You can activate DriveChat by using wake words. Different wake words trigger different functions.

Examples:

1. General Conversation

Say: "Hey Piko, What's the highest mountain in the world?"

DriveChat (Piko) answers: “Mount Everest is the highest mountain in the world.”

2. Switch to Professional Chatbot Role

Say: “Hey Mojo, switch to novelist mode.”

DriveChat (Piko): “Switching to novelist mode.”

Now continue with: “Hey Piko, how can I write a compelling novel introduction?”

In this context, "Hey Mojo" serves as the control wake word. After DriveChat switches to the novelist role, you should use "Hey Piko" to continue the conversation.

Note:

• “Hey Mojo” (control wake word) → for system control & mode switching.
• “Hey Piko” (dialogue wake word) → for interactive conversations.
• Wake words shown here are examples only. You can customize your own in the DriveChat app on the S8 head unit.

9.3.2 Configuring the Chatbot Settings

Before using the chatbot feature of DriveChat, you need to pair and configure it with the DriveChat app (on the S8) and the SSHub app (on your smartphone).

Preparation Requirements

Ensure the following:

1. The S8 head unit is connected to the internet (via 4G, Wi-Fi, or mobile hotspot).

2. SSHub app is installed and logged in on your smartphone.

3. DriveChat app is pre-installed on the S8 or downloaded via FindApps.

Operation Steps

Step 1: Log in to SSHub on Your Smartphone

1. Open the SSHub (App Store or Google Play).

2. Log in with your ATOTO account or a supported third-party account (e.g., Google).

Step 2: Pair the S8 with SSHub App

1. On the S8, open the DriveChat app. A QR code will appear.

2. On your phone, open SSHub, tap Add ATOTO Device (+), then tap Scan and scan the QR code on the S8 screen.

3. The S8 is now successfully paired with the SSHub.

Step 3: Configure the Chatbot

1. In the SSHub app, tap DriveChat to enter chatbot configuration.

2. Tap to AI Chatbot view All Available Chatbots.

3. Select a chatbot and configure:

• Use on Car Stereo → activates chatbot on the S8.
• Decision Think Tank → example chatbot name.
• Language & Tone → choose language and speaking style.
• Current Model → choose the AI model.
• Chat → interact directly on your phone.

4. In the Mine list, toggle the chatbot ON/OFF to enable or disable it on the S8.

9.4 Important Notes (DriveChat)

1. Account Owner Recognition

Voice recognition and response accuracy may improve when commands are given by the primary account holder linked through the SSHub app.

2. App Updates

Both the DriveChat app (on the S8 head unit) and the SSHub app (on your smartphone) receive periodic updates. Features, interfaces, or setup steps may change. Always consult the latest app versions for up-to-date instructions

3. Network Dependency

DriveChat requires an active internet connection on the S8 head unit to process commands and generate AI responses. Response times may vary depending on your network speed and stability.

Chapter 10 Navigation

The S8 car stereo includes a built-in GPS chip that enables navigation without relying on a smartphone or cellular data. To use this feature, simply download offline maps in advance.

10.1 GPS Antenna Connection

Operation Steps

Step 1: Locate the GPS antenna port on the back panel of the head unit.

Step 2: Connect the supplied 4-in-1 antenna to the GPS/4G/WiFi - ANT port before powering on the head unit.

Notes:

• The appearance, port, and installation location of the GPS antenna may vary depending on the S8 model.
• The type of GPS antenna included in the package also varies by model.

10.2 Auto Start Feature

The Auto Start feature allows your preferred navigation app or any other app to launch automatically whenever the stereo powers on.

Operation Steps

Step 1: Go to Settings > General and turn on Auto Start Switch.

Step 2: Locate and tap Custom Auto Start App.

Step 3: Choose your preferred navigation app (e.g., Google Maps, Waze, TomTom, etc.) from the list.

Step 4: You can also choose a non-navigation app as the auto-start app. Tap the + button and select an app to set it as the auto-start app.

10.3 Online & Offline Navigation

The stereo comes with Google Maps pre-installed, which requires an active internet connection for real-time navigation. You may also install other GPS apps from the Google Play Store, giving you the option to use either online or offline navigation depending on your needs.

Notes:

• For offline navigation, you must download offline maps first.
• Offline maps may not be available in some regions. We strongly recommend checking local availability before relying on them.

Chapter 11 FM/AM Radio

The radio supports FM and AM dual-band reception with advanced signal processing and a user-friendly interface. It is equipped with RDS (Radio Data System / RBDS), AF (Alternative Frequencies), and TA (Traffic Announcements) functions, ensuring you enjoy music, news, and real-time traffic updates with clear reception. Smart station management and enhanced sound features make listening convenient and enjoyable during both city driving and long-distance travel.

11.1 Radio App Main Screen

The radio app interface includes a series of quick-access buttons for managing stations and settings. Below is an overview of the most common controls:

Top Button Functions

• LOC (Local Mode): Tunes only to strong local stations. Useful in urban areas to reduce noise and interference.
• AF (Alternative Frequencies): Automatically switches to the strongest available frequency of the same station when reception weakens — ideal for long drives.
• TA (Traffic Announcement): Temporarily interrupts music or switches stations to broadcast real-time traffic alerts (when available).
• ST (Stereo):Indicates stereo reception (left/right channels). If the signal is weak, it may automatically switch to mono for better clarity

Right Button Functions (By Sequence Number)

• Delete All Stations: Clears all saved stations from favorites.
• Favorite Station: Add the current station to favorites or remove it.
• Settings: Access detailed radio settings (see 11.2 Radio Settings).
• PTY (Program Type): Search for stations by content type (e.g., Sports, Education, Drama, Culture, Science).
• FM/AM Toggle: Switch between FM and AM bands.
• Edit Station: Rename the current station.
• Auto Seek Tuning: Automatically scan for available stations.
• Station List: View all searched stations.
• Favorite List: View all saved favorite stations.

Note:

There are 18 preset FM radio stations and 12 preset AM radio stations. By default, these presets are filled with the lowest frequency numbers. When you use the Auto Seek Tuning function, newly received stations will automatically replace the default presets.

11.2 Radio Settings

Radio Settings lets you enable/disable RDS, adjust FM/AM sensitivity, and select the appropriate radio region for optiomal reception. These options improve convenience and enhance your in-car listening experience.

1. Radio Setup: Enable or disable RDS.

2. AM/FM Sensitivity: Adjust this if you're getting few stations or poor audio. The default setting is Initial Sensitivity, which is recommended for daily use. If reception is limited or audio quality is low, tap to switch to Manual mode.

3. Radio Area: Select the correct region for best station reception. After a factory reset, reselect your area to restore proper radio function. Please choose the appropriate region following the chart below:

Note:

• Setting sensitivity too high may cause weak signals and static on some stations.
• Setting it too low may reduce the number of stations received, affecting overall listening experience.

Chapter 12 Equalizer App (Customize Audio Experience)

This section covers the core features of in-car audio tuning. The built-in digital signal processor (DSP) enables advanced audio customization through the Equalizer app. With flexible sound control, it offers everything from basic adjustments to detailed tuning—adaptable to different music styles, cabin layouts, and personal preferences for a fully optimized listening experience.

12.1 EQ Adjustment

The S8 features a 36-band equalizer—18 bands for the front speakers and 18 for the rear. You can boost or cut specific frequency ranges to fine-tune and optimize your overall sound experience.

On the EQ Adjustment Interface

The interface includes EQ presets (User, Flat, etc.), dynamic frequency response graph, and EQ band adjustment. The specific features are as follows:

1. Preset EQ Mode

9 presets (User, Flat, Rock, Soft, Classic, Pop, Hall, Jazz, and Cinema) available for different music genres, ensuring the best sound effects.

2. Switch, Loudness, and Default Settings

These settings allow users to:

• Change the frequency response graph between bar view and curve view.
• Boost high and low frequencies at low volume for a fuller, richer sound.
• Shit the EQ settings to Flat.

3. Frequency Response Graph

The graph displays adjustment effects and changes to audio in a dynamic and intuitive way.

4. DSP Audio Processing Technology

In addition to EQ settings, the S8’s built-in DSP offers advanced audio features like Sound Field Adjustment, Time Correction, Stereo Enhancer, Bass Boost, and Crossover control for a more refined and immersive listening experience. (see details in later sections in this chapter)

Operation Steps

Step 1: Access EQ App

Navigate to Home Screen > App Drawer > Equalizer (EQ) App.

Step 2: Choose EQ Preset

Select the EQ preset that best matches your audio preferences from the available options.

Step 3: Set Custom EQ Effects If Needed

(1) Manual Mode: Select "User" or "Custom 1–5" to enable manual EQ adjustments.

(2) Frequency Adjustment: Use the EQ interface to adjust individual bands from 20 Hz to 20 kHz. Slide a band up to boost or down to cut. Gain range: 0 to +10 dB; Cut range: -10 to 0 dB. The real-time frequency graph visually reflects your changes.

12.2 Sound Field (Also Known As Listening Position) Adjustment

Sound Field allows you to create a more immersive listening experience by simulating different acoustic environments. By optimizing how sound is distributed inside the car, it enhances stereo imaging and makes music feel more spacious and natural. This feature ensures everyone in car, no matter where they sit, will enjoy balanced and lifelike audio. Key features includes:

1. Preset Listening Modes

• Whole Cabin Balance: Ensures even sound distribution across all seats, ideal for multi-passenger scenarios.
• Driver Focus: Enhances sound clarity and intensity in the driver’s area and reduces driving noise interference.
• Front Passenger Priority: Boosts the sound field on the front passenger side to meet asymmetric listening needs.
• Rear Seat Enhancement: Strengthens rear speaker output, especially suitable for rear passengers.

2. Custom Setup

• Manual Tuning: Finely adjust front/rear and left/right sound balance by dragging the crosshair on an interactive cabin diagram.

Operation Steps

Step1：Access the Sound Field Interface

Navigate to Equalizer (EQ) App > Sound Field.

Step 2: Select Preset Listening Mode

By tapping the Driver, the Co-pilot, Rear all, or All, you can preset the audio listening position. The corresponding cabin diagram will simultaneously provide visual feedback, with the selected area highlighted in the cabin (for example, when selecting the Driver, that seat will be prominently indicated with a red dot effect).

Step 3: Custom Mode (Manual Adjustment)

Drag the crosshair within the car cabin diagram to adjust front/rear and left/right balance, or move the crosshair to your desired listening focus point on the diagram for the best audio experience.

12.3 Time Correction Adjustment

Time Correction lets you align sound from each speaker so it reaches your ears at the same time. Set the distance from your seat to each speaker, and the DSP will adjust automatically. This creates a clear, centered sound stage—like sitting in the middle of a live performance.

Operation Steps

Step 1: Set Listening Position

Choose the primary listening spot—usually the driver’s seat. If you want balanced sound for all passengers, use the center of the vehicle as the listening position.

Step 2: Measure Speaker Distances

Measure the straight-line distance from the listening position to each speaker (Front Left, Front Right, Rear Left, Rear Right).

Step 3: Open Time Correction Settings

Navigate to Equalizer (EQ) App > Time Correction

Step 4: Apply Time Correction

Enter the measured distances (0–272 cm) for each speaker. The system will automatically adjust time delay (0.0–8 ms) for precise sound alignment.

12.4 Stereo Enhancer Adjustment

Stereo Enhancer widens the stereo field, creating a more spacious and immersive sound experience. By adjusting frequency and gain parameters across low, mid, and high ranges, users can fine-tune the soundstage to achieve both depth and clarity without losing balance.

Know the Parameters

FQ (Frequency): Defines the frequency range where the stereo enhancement effect applies.

TG (Through Gain): Adjusts overall gain after processing to balance the output level.

LPG (Low-Pass Gain): Adjusts low-frequency gain within stereo enhancement to keep bass tight and centered.

HPG (High-Pass Gain): Adjusts high-frequency gain to improve clarity and spaciousness.

MG (Mixing Gain): Adjusts the gain level of left–right channel mixing, balancing stereo width and localization.

Operation Steps

Step 1: Open Stereo Enhancer Settings

Go to Equalizer (EQ) App > Stereo Enhancer.

Step 2: Apply Stereo Enhancer

Gradually adjust the values of the parameter, including FQ, TG, LPG, HPG, and MG via the bar to achieve an optimal stereo sound effect.

12.5 Bass Boost Adjustment

Bass Boost is designed to enhance low frequencies, delivering deeper and more powerful bass. By applying targeted gain, it enriches the audio experience with fuller sound. You can adjust it to suit different music styles and personal preferences for the ideal listening atmosphere.

Operation Steps

Step 1: Open Bass Boost Settings

Go to Equalizer (EQ) App > Bass Boost.

Step 2: Apply Bass Boost

Choose a bass frequency range (OFF, ≤54 Hz, ≤68 Hz, ≤86 Hz, ≤108 Hz, ≤134 Hz, ≤172 Hz, ≤214 Hz) to enhance, and adjust the boost level from 0 to 12 dB for your desired low-end impact.

Step 3: Apply Subwoofer Boost

Tap Sub to enter Subwoofer Boost settings.

Step 4: Set the Boost Frequency Range (0-250 Hz)

Drag the vertical line left or right to set the upper limit of the frequency range affected by bass boost.

Step 5: Set the Boost Level (0-10 dB)

Drag the horizontal line up or down to set the gain level (how much the bass is boosted) for the selected frequency range.

12.6 Crossover Adjustment

Using crossover adjustment to divide audio signals into different frequency ranges and directs them to the appropriate speakers: lows go to the subwoofer, mids to the midrange speakers, highs to the tweeters. This ensures each speaker plays only what it’s designed for, reducing distortion and delivering clearer, more balanced sound.

Know the Abbreviations

HPF (High Pass Filter): Lets high frequencies above the set point pass through while blocking lower ones. Commonly applied to midrange and tweeters to prevent distortion from unwanted bass.

LPF (Low Pass Filter): Lets low frequencies below the set point pass through while blocking higher ones. Typically used with subwoofers so they only handle deep bass.

F = Front Speaker

R = Right Speaker

Operation Steps

Step 1: Open Crossover Settings

Go to Equalizer (EQ) App > Crossover.

Step 2: Apply Crossover

Two high-pass filters set cut-off points between the subwoofer and the front/rear speakers, while two low-pass filters control the front and rear speaker output for balanced sound. Adjust to the frequency range that you want to filter. In this example:

Bass below 51 Hz on the front speakers is cut by the high-pass filter

Treble above 18.0 kHz on the front speakers is cut by the low-pass filter

Bass below 50 Hz on the rear speakers is cut by the high-pass filter

Treble above 19.0 kHz on the rear speakers is cut by the low-pass filter

Important Notes:

• The Equalizer app interface may vary depending on the S8 model.
• The number of adjustable frequency bands differs by model: some models support 32 bands, while others support 36 bands.

Chapter 13 AUX App (Audio and Video Input)

The AUX function on the S8 Android head unit allows you to connect external audio, video, or combined audio-video devices through the RCA connectors. With the built-in AUX app, you can view video on the S8 display and play sound through the vehicle’s original speakers.

Key features

1. RCA-Compatible External Input

• The included RCA harness provides Left (white) and Right (red) audio input jacks, plus a Video (yellow) input jack.
• Compatible with most external devices, including DVD players, game consoles, digital TV boxes, or other multimedia players.
• Expands your in-car entertainment options beyond USB and HDMI.

2. AUX App Integration

• Access audio and video input via the pre-installed AUX app.
• Once a compatible device is connected, simply launch the app to access and control playback.

3. Synchronized Playback

• Supports stereo analog audio input for playback through original car speakers.
• Video input follows the composite video (CVBS) standard and displays on the S8 screen.

Prerequisites

Before connecting an external device, ensure it provides RCA Output with:

• Left channel audio
• Right channel audio
• Video output

Note:

The position of the AUX ports (Audio and Video) may vary by S8 model or the included RCA wiring harness type. Refer to your device’s wiring documentation (detailed Installation Instructions) for details.

Operation Steps:

Step 1: Confirm Device Output

Ensure the external device has standard RCA output ports.

Step 2: Connect to S8

Match the RCA plugs (yellow/red/white) of the external device to the corresponding RCA input jacks on the S8 harness.

Step 3: Launch AUX App

• Navigate to Home Screen > APP Drawer > AUX App.
• Tap the AUX app icon to open. The system automatically detects the incoming signal and play.

Step 4: Adjust Volume

Tap the Volume icon at the top-right corner, and adjust the slider to your preferred level.

Notes:

1. Video Playback While Driving:

• By default, video playback is only available when the vehicle is stationary.
• This restriction can be disabled via Settings > General > Disable video playback while in motion.
• The restriction is designed to reduce driver distraction and help ensure compliance with road safety regulations.

2. Disabling the Safety Restriction:

• Navigate to Home Screen > App Drawer > Settings > General.
• Tap the switch for Disable video playback while in motion to enable or disable the feature.

Chapter 14 HDMI-IN App (HDMI Input)

The HDMI-IN app on S8 Android head units lets you display real-time video from external devices—like TV sticks, game consoles, digital cameras, and streaming devices—via the HDMI-IN port for a richer multimedia experience.

Only the UN models of FlexView Pro styles include a native mini HDMI-IN port. Other S8 models require a compatible ATOTO HDMI-to-USB adapter.

Compatibility Requirements

1. Models with a Native mini HDMI-IN port

• S8G1109UN, S8G1109PUN, and S8G1299PUN
• Direction connection supported. No adapter needed.
• Compatible with devices using HDMI 1.4 or earlier.

2. Models without a Native mini HDMI-IN port

• S8G2A74MS, S8G2B74MS, S8G2C74MS, S8G2094MS, S8G2A79UN, S8G2C79UN, and S8G2099UN
• Require a compatible ATOTO AC-HBV86 or AC-HBV89 HDMI-to-USB adapter (sold separately).
• Compatible with HDMI 1.4 or earlier devices.

Operation Steps

For Models with a Mini HDMI-IN Port

Step 1: Connect your external device directly to the mini HDMI-IN port.

Step 2: On the S8, tap the HDMI-IN app icon to begin viewing high-definition video from the connected device.

For Models without a Mini HDMI-IN Port

Step 1: Learn About the Adapter

Scan the QR code below and select your adapter model (AC-HBV86 or AC-HBV89) to view detailed instructions.

Step 2: Connect the Device

• Plug the HDMI end of the adapter into your device’s HDMI output.
• Connect the USB end to the S8’s USB port.

Step 3: Start Playback

• Go to Home Screen > App Drawer > HDMI-IN App.
• Tap the app icon to display high-definition video.

Notes:

• Safety Restriction: Video and images are viewable only when the vehicle is stationary and the parking brake is engaged, in compliance with safety regulations.
• Model Limitation: Only select S8 models include a mini HDMI-IN port. For all other models, a compatible ATOTO HDMI-to-USB adapter is required for input 1080P video and high-quality audio input.

Chapter 15 DAB+ App

The DAB+ app comes pre-installed on S8 Android head units and requires a compatible external USB DAB+ receiver (DAB+ Box) for reliable digital radio reception. It delivers high-quality DAB/DAB+ broadcasts with minimal interference, offering clearer sound and more content than traditional FM radio.

Main Features

1. Digital Audio Broadcast Reception: Receives DAB/DAB+ signals for stable, high-quality digital audio playback.

2. Full-Band Auto Scan: Automatically scans all available DAB stations in the region, building the channel list and updating newly added stations.

3. Grouped Browsing: Stations are grouped by service type (e.g., News, Pop Music, Sports) for easier browsing.

4. Signal Strength Display: Shows the signal strength of the current station to help find the best reception area.

5. Program Information Display: Displays station logo, signal strength, station name, Ensemble, frequency, and PTY (Program Type), depending on broadcaster data.

6. DLS Scrolling Information: Real-time text info (current program, song title, news snippets) scrolls across the screen.

7. Preset Favorites Function: Save favorite stations to a preset list for quick access.

Required Accessory

• A compatible DAB+ USB receiver is required.
• Use the ATOTO AC-4475 USB DAB+ receiver (DAB+ Box) (sold separately).

Note: The S8 is not compatible with third-party DAB+ receivers.

Operation Steps

Step 1: Connect the DAB+ Receiver (DAB+ Box)

• Plug the ATOTO AC-4475 USB DAB+ receiver into any USB port on the S8.
• Scan the QR code below and select the product model to view detailed instructions.

Step 2: Launch the DAB+ App

• Navigation to Home Screen > App Drawer > DAB+ App.
• Tap the app icon to launch the application.

Step 3: Full-Band Background Scanning

• The system automatically scans all digital radio frequencies in the region (covering multiple Ensembles).
• Found channels are saved to the channel list.

Note: Scanning may take several minutes.

Step 4: Browse and Listen

• Tap the “<” icon to expand the channel list.
• Browse and tap any station to play.
• Features include station switching, favoriting, and viewing signal strength.

Step 5: Playback Controls

• Play/Pause: Tap the Play or Pause button.
• Switch Stations: Tap Previous or Next.
• Favorite/Unfavorite Station: Tap the heart icon.
• Expand Ensemble List: Tap the “^” icon to view all stations in a broadcast service group.

Important Notes:

1. Ensure the head unit is connected to a compatible DAB+ Box before using the DAB+ app.

2. DAB+ service is only available in Europe, Australia, and the UK. Verify local availability before use.

3. If no stations are received, try moving the vehicle or relocating the DAB+ Box to improve signal reception.

Chapter 16 FileManager App

This app functions like a file manager on your smartphone or computer, allowing easy management of files stored on the S8 head unit and connected devices. With an intuitive interface, you can browse, organize, copy, and delete files from internal storage, USB drives, microSD cards, and more.

Operation Steps

Navigation Path: Home Screen > App Drawer > FileManager App

1. Manage Local Files

Step 1: Open the FileManager app.

Step 2: Browse, organize, copy, and delete files as needed.

2. Manage Files on an External Storage Device (Example: USB Flash Drive)

Step 1: Insert the USB flash drive into the S8 head unit’s USB port.

Step 2: Open the FileManager app.

Step 3: Locate and tap the USB (F) folder to open the file management page.

Step 4: Browse, organize, copy, or delete files as needed.

Step 5: Once finished, safely unplug the USB flash drive.

3. Transfer Files from an External Storage Device to S8 (Example: USB Flash Drive)

Step 1: Insert the USB flash drive into the S8 head unit’s USB port.

Step 2: Open the FileManager app.

Step 3: Locate and tap the USB (F) folder to open the file management page.

Step 4: Select a file you want to transfer. A check mark will appear next to selected files.

Step 5: Use the action bar at the bottom. Tap Copy or Cut to transfer the selected file.

Step 6: In the sidebar, choose a destination folder (Internal or Photo Folder).

Step 7: Tap your chosen folder, then tap Paste to complete the transfer.

Step 8: When finished, safely unplug the USB flash drive.

Note:To transfer files from the S8 to a USB drive, follow the same steps but switch the selection source and destination.

Chapter 17 Local Media Playback

The S8 Android head unit allows you to play media directly from USB drives or a MicroSD card. Simply insert your storage device into the corresponding port, and you can browse and enjoy music, videos, or photos right on the screen. This feature makes it easy to expand your entertainment options and access your personal media library during any trip.

Operation Steps

Step 1: Connect a Storage Device (Example: USB Drive)

Insert a USB drive into the USB port on the S8 head unit.

Step 2: Open FileManager App

• Go to Home Screen > App Drawer > FileManager App.
• Tap the app icon to launch it.

Step 3: Select Storage Source

• In the FileManager interface, available storage options will appear, such as:

1. Internal

2. Photo Folder

3. USB (F)

• Tap USB (F) to access files on the connected drive.

Step 4: Browse and Play Content

Choose the desired file type (documents, photos, music, or videos) to view or play directly on the head unit.

Step 5: Safely Remove Device

Before unplugging the USB device:

1. Pause or stop playback.

2. Return to the Home Screen or File Manager.

3. Ensure the device is not in active use to avoid data loss.

Important Notes:

1. Certain high-bitrate or professional video codecs may not be supported.

2. Viewing video or photos while driving is prohibited under federal, state, and local laws.

3. Only use the device in a safe and legal manner according to traffic regulations.

4. Video and photo playback is available only when the vehicle is stationary with the parking brake engaged.

Chapter 18 Gallery App (Picture Player App)

The Gallery App is a built-in photo viewer on the S8 Android head unit. It lets you access and enjoy images stored on a USB drive, MicroSD card, or the device’s internal storage. With the large touchscreen, you can browse photos individually or play them as a slideshow for a more immersive viewing experience.

Key features

1. Compatible with multiple formats (JPG, PNG, BMP, and more).

2. Automatically scans and loads images from external devices.

3. Supports both folder browsing and categorized display.

4. Offers single-image viewing or continuous slideshow playback.

5. Supports zooming in and rotating.

6. Allows quick switching between images in sequential order or by folder.

Operation Steps

Step 1: Insert the Storage Device

• Insert a USB flash drive or MicroSD card containing image files into the corresponding port of the S8 Android head unit.
• The system will automatically detect and read the image files.

Step 2: Enable the Gallery App

• Navigate to Home Screen > App Drawer > Gallery App.
• Tap to launch the Gallery app and open the corresponding interface.

Step 3: Select a Playback Source and Image

• Choose the storage device (e.g., USB (F), SD, or Internal Storage).
• Browse folders and tap any image file to open it.

Step 4: Playback Controls

In the picture playback interface, tap the screen to display playback controls.

• To view images one by one, tap Previous or Next button to switch to the previous or next picture.

• To enable slideshow playback mode, tap Play or Pause button to play or pause.

• To zoom in on an image, use two fingers to spread on the screen.

• To set an image as wallpaper, tap the Picture button in the playback interface to apply the current image as the wallpaper.

• To rotate the picture, tap the Rotate Button in the playback interface to rotate the image 90° clockwise.

Chapter 19 Music Player App

The Music Player App is a built-in audio player on the S8 Android head unit. It allows you to enjoy music stored on a USB drive, MicroSD card, or the unit’s internal storage. Designed for the large touchscreen, it provides smooth operation and a rich in-car listening experience. Key features include:

(1) Supports multiple audio formats including MP3, WMA, FLAC, APE, WAV.

(2) Automatically detects music files from external storage.

(3) Provides folder browsing and categorized display.

(4) Supports playback modes such as sequential, shuffle, and single-track loop.

(5) Supports lyrics display and album cover art (depending on file metadata)

(6) Supports background playback and steering wheel control (if configured)

Operation Steps

Step 1: Insert a Storage Device

Insert a USB drive or MicroSD card containing audio files into the corresponding port of the S8 Android head unit system. The system will automatically scan and detect the music files.

Step 2: Launch the Music Player

Navigate to Home Screen > App Drawer > Music Player App. Tap to launch the Music Player app and open the corresponding interface.

Step 3: Select a Playback Source and Music File to Play

In the interface, select the corresponding storage device (e.g., “USB (F),” “SD,” “Internal Storage”). Browse folders or categorized lists and tap any song to start playback.

Step 4: Playback Controls

In the music playback interface, tap the screen to display playback controls.

• To play/pause, tap Play or Pause button to play or pause the current song.

• To switch songs, tap Previous or Next button to switch to the previous or next song.

• To change the playback mode, tap the Playback Mode button to switch between sequential, shuffle, or single-track loop modes.

• To adjust the song playback progress, drag the progress bar to fast-forward or rewind the current song.

Chapter 20 Video Player App

The Video Player App is a pre-installed local video playback application on the S8 Android head unit. It supports playing video files from USB drives, MicroSD cards, or local storage. Optimized for the S8 Android head unit’s large display screen and touch operation, it supports multiple video formats and high-definition playback, meeting in-car entertainment needs while parked or resting.

Key features

1. Supports multiple video formats: MP4, AVI, MKV, MOV, 3GP, FLV, and more.

2. Automatically scans and detects video files on external devices.

3. Provides folder browsing and categorized display.

4. Offers playback-mode switching: single-video loop / play-all videos.

5. Allows full-screen / windowed playback mode switching.

6. Remembers playback position (resume from last point).

7. Includes basic controls such as fast-forward/rewind, pause/play, and progress slider.

8. Supports subtitle loading (e.g., .srt) and cover-art recognition.

Operation Steps

Step 1: Insert a Storage Device

• Insert a USB drive or MicroSD card containing video files into the head unit.
• The system will automatically detect and load the media content.

Step 2: Launch the Video Player App

• Navigate to Home Screen > App Drawer > Video Player App.
• Tap the app icon to open the video playback interface.

Step 3: Select Source and Video

• Choose the storage location (USB (F), SD, or Internal Storage).
• Browse folders and tap a video file to start playback.

Step 4: Playback Controls

• Play/Pause: Tap Play or Pause button to play or pause the current video.
• Switch Videos: Tap Previous or Next button to switch to the previous or next video.
• Full-screen/Window Mode: Tap the Full-Screen or Window button oat the top right corner of the screen to toggle display modes.
• Playback Mode: Tap the Playback Mode button to switch among:
  • Single-Video Loop (repeats the current video)
  • Play-All Videos (the next video starts automatically after the current one)
  • Shuffle (a random video will play after the current one).
• Playback Progress: Drag the progress bar to fast-forward or rewind the video.

Chapter 21 Split Screen

The Split Screen allows users to run and display two applications simultaneously on the same screen, enabling multitasking. For example, users can use navigation while playing music or browsing the web, without frequently switching between apps, thereby improving operational efficiency and driving convenience. The main features are as follows:

(1) Supports simultaneous display of two apps on one screen without interference.

(2) Provides quick methods to switch or exit split-screen mode.

(3) Compatible with some native and third-party apps (depending on whether the app itself supports split screen)

Note: This feature is available on Android car systems that support split-screen mode and must be used with apps that are compatible with split-screen display.

Operation Steps

Note: The following operation case is for reference.

Step 1: Enable YouTube App

Navigate to Home Screen > App Drawer > YouTube and tap the YouTube app icon to open the corresponding interface.

Step 2: Check if the App Supports Split-Screen Functionality

Tap the Square icon at the top left corner of the screen and all apps run in the background will appear. Apps that support split screen functionality will show the Split icon.

Step 3: Perform Split-Screen Operation

Tap the Split icon and select another app to complete the Split Screen operation.

Step 4: Exit Split Screen

Drag the dividing line to the far left/right side to exit split screen and return to full-screen view (single application mode).

Chapter 22 Recent Apps Manager

The Recent Apps Manager gives you quick access to all apps that were recently opened. From here, you can:

1. View running apps currently active in the background.

2. Close apps to free up system memory and improve performance.

3. Lock apps so they remain running in the background even after memory cleanup.

This feature makes it easy to manage system resources and keep the S8 head unit running smoothly.

Operation Steps

Step 1: Access Recent Apps Manager

Tap the Square icon at the top left corner of the screen to enable Recent Apps Manager.

Step 2: Manage Apps and Memory

Within the Recent Apps Manager, you can:

• View background apps – see all apps currently running.
• Check Split Screen support – verify if an app can run in split screen mode.
• Lock/Unlock an app – drag down and release an app preview to lock it in the background; repeat to unlock.
• Close an app – drag an app preview upward to remove it from the background.
• Free up memory – tap the Delete icon at the bottom to clear memory and improve performance.

Chapter 23 Camera Input

The S8 Android head unit supports multi-channel camera input, including DVR (Dual-Channel Recording Camera or Front & Rear View Camera) and DVR CAM (USB Driving Video Recorder). These inputs provide enhanced safety and convenience while driving.

Supported Camera Types and Functions

1. DVR (Dual-Channel Recording Camera / Front & Rear View Camera)

• Simultaneously records both front and rear road conditions.
• Provides real-time video display for better situational awareness.

2. DVR (Front View Camera)

• Captures live images in front of the vehicle.
• Assists with driving, parking, and collision avoidance.

3. DVR (Rear View Camera)

• Displays the area behind the vehicle.
• Facilitates reversing and parking maneuvers safely.

4. Enhanced Safe Driving

• Supports multi-channel video display, image switching, and video recording.
• Improves the intelligence and safety of driving with real-time monitoring.

Note: Only officially designated ATOTO cameras are supported:

• Front Camera: ATOTO AC-FCR04W
• Rear Camera: ATOTO AC-RCR04W

23.1 DVR (Dual-Channel Recording Camera)

The DVR function of the S8 Android head unit supports simultaneous front and rear camera recording, ensuring complete, real-time coverage of road conditions. With the official ATOTO AC-FCR04W Front Camera and AC-RCR04W Rear Camera (sold separately), you gain a robust dual-channel recording system for enhanced driving safety and evidence collection.

Extension Cable Lengths

• Front Recording Camera: 3.5 meters
• Rear Recording Camera: 8 meters

Key Functions

1. Dual-Channel Recording

• Records both front and rear views in real time.
• Supports 1080P AHD resolution for both channels.

2. Flexible Display Options

View front only, rear only, or dual-camera feeds on the S8 screen.

3. GPS-Tagged Recording

Captures video with GPS coordinates, letting you track exact driving locations.

4. Auto Start & Loop Recording

• Begins recording automatically when a USB drive is inserted into the DVR-dedicated Recording Storage Cable’s USB port.
• Supports loop recording (old files are overwritten by new ones).
• Important: Format the USB drive before first use. If recording fails, reformat and try again.

5. Anti-Glare (Strong Light Suppression)

Maintains clarity when facing bright sunlight or intense night lighting.

• Captures important details such as license plates under challenging conditions.

6. Wide-Angle Coverage

Both cameras feature a 150° viewing angle for broader road coverage.

7. Night Vision

Enhanced low-light performance ensures visibility of license plates, road signs, and garage areas.

8. IP67 Waterproof Rear Camera

• Withstands immersion in up to 1 meter of water for 30 minutes.
• Resists heavy rain and snow, ensuring reliable outdoor use.

9. Real-Time Rear View

Automatically switches to the rear camera feed when the gear is shifted to R (Reverse).

10. Wide Dynamic Range (WDR)

Enhances video quality in backlit or high-contrast environments, capturing finer details.

11. Manual Video Locking

• Protects important footage from being overwritten.
• Locked videos can serve as strong evidence in the event of an incident.

Required Accessories

• ATOTO AC-FCR04W Front Recording Camera (sold separately)

ATOTO AC-RCR04W Rear Recording Camera (sold separately)

DVR App Integration

The S8 comes with a pre-installed DVR application, specifically designed for:

• Connecting and managing front/rear recording cameras.
• Previewing and recording live video feeds.
• Playing back recorded footage for review.

This makes it easier to manage driving safety, monitor video recordings, and secure important evidence directly from the S8 Android head unit.

Operation Steps

Step 1: Understand Camera and DVR App Usage

• Scan the QR code below and select AC-FCR04W model to view detailed instructions.

• Scan the QR code below and select AC-RCR04W model to view detailed instructions.

Step 2: Connect USB 3.0 Card Reader with TF Card

• Insert the included 2-in-1 USB cable (for external storage & phone link) into the USB port on the rear panel of the S8 head unit.
• Plug a USB 3.0 card reader with TF card (TF card not included) into the USB port of the USB recording storage cable.

Notes:

1. The S8 USB port also supports direct connection of a USB 3.0 card reader with a TF card.

2. Recommended DVR setup:

• Connect the USB 3.0 card reader with TF card to the S8 via the designated USB port.
• Use the USB recording storage cable (from the 2-in-1 cable) to connect the dedicated DVR.
• This ensures stable data transfer and reliable recording performance.

3. If the card reader is not formatted, a prompt will appear. Tap OK to format. Backup all data first, as formatting will erase existing files.

Step 3: View Video Footage

• Go to Home Screen > App Drawer > DVR App.
• Tap the DVR app icon to view the video footage from the front and rear recording cameras.

Step 4: Switch Front and Rear Camera Views

• Tap the mini window (top-left corner of the screen) to switch views:
  • Front camera → large window
  • Rear camera → small window
• Tap again to swap the display.

Step 5: DVR Settings

Open Settings in the DVR interface to configure recording preferences:

Recording Settings:

Recording Device: Select the active recording device.

Loop Time: Set duration (1 / 3 / 5 minutes).

Speed Unit: Choose km/h or mph.

GPS Position Display: Enable/disable GPS coordinates.

Speed Display: Enable/disable driving speed.

Microphone: Enable/disable audio recording.

Format USB: Tap OK to erase and reformat the TF card.

Front & Rear View Settings (Mirror Settings):

1. Front Camera Mirror: Reverses the front image. Not recommended for front camera.

2. Rear Camera Mirror: Corrects rear image orientation. Recommended for rear camera.

Step 6: Review Recordings

• Tap the List icon to access saved content:
  • Recorded videos
  • Captured photos
  • Locked (protected) video files

23.2 DVR CAM

The DVR CAM function works with a USB driving recorder to improve driving safety, capture accident evidence, and record trips.

For the best performance, we recommend pairing your S8 with ATOTO's dedicated front and rear recording cameras (AC-FCR04W / AC-RCR04W, sold separately).

Chapter 24 WRC App

The WRC App is a built-in wireless rear camera application on the S8 Android head unit.

(On some models, it may need to be downloaded from the FindApps Store.)

It is designed to receive and display real-time video from wireless front, rear, left, or right side cameras, helping drivers gain full awareness of their surroundings and enhancing safety. Using direct Wi-Fi transmission, the WRC App eliminates traditional video cables, simplifying installation while allowing flexible multi-angle viewing.

Key Features

1. Wireless Video Reception

Receives HD video signals from wireless cameras via Wi-Fi with smooth and stable transmission.

2. Multi-Angle View Support

Switch between front, rear, left, and right cameras for 360° monitoring and reduced blind spots

3. Video Display Modes

• Power Saving Mode: Enters standby after 60 seconds of inactivity (default)
• Always On Mode: continuous camera operation.

4. Multiple Wake-Up Methods

• Wake up the view by:
  • Tapping the screen
  • Pressing the Wake button on the receiver box
  • Using voice commands via the DriveChat app (if installed)

5. Reverse Assistance

Supports reverse view, parking guide lines, and angle calibration to improve parking safety.

6. Flexible Installation Compatibility

• No video cables required; suitable for sedans, pickups, SUVs, and mini RVs.
• Ideal for vehicles with complex wiring or structural challenges.

Required Accessory:

To use the WRC function, the ATOTO WR2-12HDLR Wireless Rear View Camera (sold separately) is required.

Software:

• The S8 includes the WRC App pre-installed.
• On some models, it may need to be downloaded from the FindApps Store.
• Once paired with the WR2-12HDLR wireless rear camera (sold separately), the S8 displays real-time rear view.

Operation Steps

Step 1: Learn Camera Details

Scan the provided QR code and select WR2-12HDLR model to view detailed instructions.

Step 2: Preview Real-Time View

• Navigate to Home Screen > App Drawer > WRC App.
• Tap the WRC app icon to view the real-time feed from the WR2-12HDLR wireless rear camera on the S8 display.

Chapter 25 TrackHU APP (Built-in GPS Tracker)

The TrackHU App is a pre-installed GPS tracking application on the S8 Android head unit, designed to simplify vehicle positioning and improve security.

It enables real-time vehicle location tracking, reporting, and uploading of data. To activate, simply enable GPS and network on your S8, then scan the head unit’s QR code to pair it with the TrackHU Manager Web Portal for extended features.

Core Functions on the S8 Head Unit

1. Positioning

Uses the built-in GPS module to obtain real-time geographic location of the vehicle.

2. Reporting

Uploads the acquired location information to a designated remote server via the S8’s mobile network (4G) or Wi-Fi.

Note: The TrackHU app on the S8 does not support advanced features (geofence setup, alarm rule configuration, or tracking strategy management). It acts only as a data collection and upload tool.

Extended Features via TrackHU Manager (Mobile/Web)

To unlock full functionality, log into the TrackHU Manager Web Portal on your mobile phone:

1. Real-time Tracking

View your vehicle’s live location with dynamic map display.

2. Driving Data Access

Review historical driving data including speed and distance analytics.

3. Geo-Fencing

Create virtual boundaries and receive alerts when your vehicle enters or exits the defined zone.

4. Alarm Notifications

Get instant alerts on your phone or head unit for abnormal events (e.g., vibration, movement).

5. 24/7 Vehicle Security

Continuous monitoring and alerts to help safeguard your vehicle.

Adding the Head Unit as a Trackable Device

To enable synchronization and real-time monitoring:

• Pair the S8 Android head unit with the TrackHU Manager platform.
• This links your S8 to the system, enabling data uploads, remote monitoring, and live GPS tracking.

Prerequisites for TrackHU

1. App Availability

TrackHU is pre-installed on the S8 or can be downloaded from the FindApps Store.

2. Enable Services

• GPS and network (Wi-Fi or 4G) must be enabled on the head unit.
• Go to: Settings > Users & Accounts > Location and turn on Location Services.

3. Offline Buffering

If internet is lost, tracking data is stored locally and uploaded automatically once connection is restored.

4. Testing Phase

TrackHU is still being updated. Please always refer to the S8 head unit interface and the TrackHU mobile/web portal for the latest instructions.

Operation Steps

Step 1: Ensure Internet Connection

Make sure your S8 Android head unit has active internet access (via 4G, Wi-Fi, or Mobile Hotspot).

Step 2: Enable TrackHU App Visibility (First Time Only)

• Go to Settings > Device.
• Tap the Device button four times in a row.
• A confirmation message will appear, and the TrackHU app icon will be added to the main apps menu.

Note: For privacy and security protection, the TrackHU app icon is hidden by default.

Step 3: Launch TrackHU App

• Navigate to Home Screen > App Drawer > TrackHU App.
• Tap the TrackHU app icon to open it.

Step 4: Enable TrackHU

On the TrackHU app interface:

1. Tap the Status button to activate it.

2. Check network and GPS status (2) displayed at the top left corner.

3. Optionally, tap Feedback (3) to provide suggestions.

Step 5: Access the TrackHU Manager Web Portal

• Once activated, a QR code will appear on the screen.
• Scan it with your smartphone to open the TrackHU Manager Web Portal.

Note: The QR code expires after 5 minutes. Tap Refresh or restart the app to generate a new code.

Step 6: Sign in or Register

• Log in with your existing TrackHU account, or
• Register a new account using your email address.

You can now view your vehicle’s real-time location and manage tracking features.

Step 7: Name the Device

• Assign a name to your head unit (e.g., “Betty’s S8”) and save it.
• Tap the Map button at the bottom of the interface.
• Tap the List icon at the top left to view your device list.
• When the device status shows Online (usually within seconds), tap the device name to access:
  • Real-time GPS location
  • Past driving routes
  • Additional tracking information

Note:

1. Ensure GPS and network (WiFi or mobile data)are enabled on your S8 to receive notifications via email syn data.

2. If the S8 loses internet connectivity, tracking data will be stored locally and automatically uploaded once the connection is restored.

3. The TrackHU app is in beta and may be updated. Always refer to the S8 interface and web/web portal for the latest instructions.

Chapter 26 LumiAuto App (Ambient Lighting Control)

The LumiAuto App allows you to control the ATOTO CI-FLT01 Interior Footwell Lights (sold separately) for personalized in-car ambient lighting. You can manage lighting effects either from the S8 Android head unit (pre-installed LumiAuto app) or your smartphone (download required).

1. Key Features

Lighting Modes

• Solid Color Mode: Choose any color from the full RGB spectrum.

• Multi-Color Mode: Access dynamic effects such as breathing, gradient, or strobe.

Customization & Synchronization

• Adjustable Brightness: Independently set the front and rear brightness levels

• Music Sync: Lights pulse & shift with your music (Bluetooth or local playback)

• Scene-Based Ambience: Save and apply presets for different occasions (e.g., relaxed evening, road trip).

Control Options

• Via Head Unit: Open the LimiAuto app from the S8 screen and adjust settings.

• Via Smartphone: Download the LumiAuto app to make remote adjustments & manage saved profiles.

2. Functionality Overview

The LumiAuto app lets you adjust color, brightness, and lighting modes of the CI-FLT01 lights, enhancing your in-car ambiance to match your preferences.

3. Requirements

• Accessory: ATOTO CI-FLT01 Interior Footwell Lights (sold separately).
• Software:
  • S8 Head Unit: Pre-installed LumiAuto app.
  • Smartphone: Download the LumiAuto app (Currently optimized for Android; iOS version coming soon.)

4. Setup & Usage

For installation and detailed instructions, scan the provided QR code and select CI-FLT01 model.

Chapter 27 CarIoTHub App

The CarIoTHub App is a new ATOTO application (currently under development) designed to provide easy and convenient control of ATOTO LED light pods and ambient lighting.

With the CarIoTHub App, you will be able to:

• Switch between different light modes
• Adjust brightness levels
• Power the lights on or off
• Customize ambient lighting effects

Note: Both the CarIoTHub App and the ATOTO LED light pods/ambient lighting will be officially released soon. Please stay tuned for updates and availability.

Chapter 28 TPMS (Tire Pressure Monitoring System) App

The TPMS App provides real-time monitoring of tire pressure and temperature. If it detects abnormalities such as overinflation, underinflation, or unusual temperature rise, it immediately alerts the driver, helping prevent tire blowouts and improving driving safety.

1. Requirements

• Accessory: ATOTO AC-UTP1 TPMS (sold separately).
• Software: The S8 head unit includes a pre-installed TPMS app. Once paired with the AC-UTP1 TPMS, it will continuously display tire pressure and temperature.

2. Functionality Overview

• Real-time monitoring of tire pressure and temperature.
• Automatic alerts in case of abnormal readings.
• Enhanced driving safety and reduced risk of hazardous tire-related incidents.

3. Setup & Usage:

For installation and detailed usage instructions, scan the QR code below and select AC-UTP1 model.

Chapter 29 Torque App

The Torque App is a third-party automotive diagnostic tool for Android, designed to work with OBD II Bluetooth diagnostic interfaces. When installed on the S8 Android head unit, it provides real-time data from the vehicle’s ECU (Engine Control Unit), enabling users to monitor vehicle status, perform diagnostics, and analyze performance.

1. Requirements

• Accessory: ATOTO AC-4450 Mini OBD II Diagnostic Scanner (sold separately).
• Software: The S8 head unit includes a pre-installed Torque app, which works once paired with the AC-4450 scanner.

2. Functionality Overview

• Monitor engine operating conditions in real-time.
• View live sensor data and system performance.
• Perform fault diagnostics and clear fault codes.
• Analyze vehicle performance trends.

3. Setup & Usage

For installation and detailed instructions, scan the QR code below and select AC-4450 model.

Chapter 30 FindApps

FindApps is an exclusive app store designed specifically for ATOTO Android devices, providing a curated selection of apps that are fully compatible with ATOTO units. Unlike the general Google Play Store, FindApps ensures app reliability and seamless operation on your head unit.

Operation Steps

Step 1: Launch FindApps

• Go to Home Screen > App Drawer > FindApps.
• tap the app icon to open it.

Step 2: Install Apps

• Browse the app list to find desired apps.
• Tap Install > Retrieve to download and install the app on your S8 head unit.

Step 3: Manage Apps

• Go to Manage page.
• Scroll through the installed apps list to:
  • Open an app
  • Uninstall an app
  • Update an app
• Perform the desired action to maintain your head unit's software.

Chapter 31 Web Resources App

Web Resources App is a built-in web portal on the S8 Android head unit, designed to provide quick access to information, resources, and support related to your device. By connecting to the internet (Wi-Fi, mobile hotspot, etc.), the app allows convenient access to firmware updates, tutorials, and support services.

Key Features

1. Download apps and update firmware effortlessly.

2. View all items included in your package.

3. Access guided installation and connection video tutorials.

4. Receive instructions in your preferred language (15 options available).

5. Apply for a warranty with a single click.

Operation Steps

Step 1: Launch Web Resources App

• Go to Home Screen > App Drawer > Web Resources App.
• Tap the Web Resources app icon open the interface.

Step 2: Scan the QR code

• Use your smartphone to scan the QR code displayed on the app interface.
• You will be directed to the corresponding page on the Eproductcare website:http://www.eproductcare.com

Chapter 32 Fast Boot

The Fast Boot function allows the S8 Android head unit to quickly enter the main interface after the vehicle starts, significantly reducing system boot time.

32.1 How Fast Boot Works

1. Low-Power Sleep Mode

• Activates approximately 5 minutes after the engine is turned off and the key is removed (or when the driver’s door is opened, depending on the vehicle).
• Enables the S8 Android head unit to wake up in under 2 seconds with the ACC power signal.

2. Battery Efficiency

• Operates on less than 7mA, allowing a typical car battery to last 160–250 days in sleep mode.
• Automatically transitions to full power-off mode if idle for more than 168 hours (7 days), reducing battery consumption to 2.5%–4%.

3. Recharging and Automatic Shutdown

• Daily driving recharges the battery, preventing automatic shutdown.
• If parked for over 7 days, system start-up will take 20–25 seconds.

4. Proven Reliability

Supported by over 100,000 users.

32.2 Cautions for Fast Boot

1. Proper Wiring Required

• Ensure 12V Ignition/ACC and 12V Constant Power/Battery are correctly connected in the power harness.
• For detailed guidance, refer to the Installation > Wiring Connection section:

Eproductcare > Car Stereo > S8 > Specific Model: S8XXX > Installation

2. Incorrect Wiring Effects

• May prevent the system from entering sleep mode.
• Could leave the screen on or interrupt hibernation, resulting in a 20–30-second restart time.

Chapter 33 Network Settings

This chapter introduces the network settings of the S8 Android head unit, including WiFi (WLAN), Data Saver, Mobile Network, and Hotspot, helping you optimize network connectivity and ensure stability and security while driving.

33.1 WiFi (WLAN) Settings

WLAN (Wireless Local Area Network), commonly known as WiFi, allows the S8 Android head unit to connect to the internet via wireless networks. Benefits include:

1. High-Speed Internet Access – Connect to WiFi networks at home, office, or public places.

2. Data Saving – Reduce mobile data usage (4G) and save costs.

3. Software Updates – Some system updates require WiFi to prevent large mobile data consumption.

Notes:

• Supports 2.4GHz & 5GHz dual-band WiFi (depending on hardware configuration).
• Supports WPA/WPA2/WPA3 security protocols for safe connections.

Operation Steps

Step 1: Access WiFi (WLAN)

• Navigate to Settings > WLAN.
• For detailed WiFi network settings, refer to Section 5.1 in this manual.

33.2 Data Saver Settings

The Data Saver feature allows you to permit or block background app data usage to prevent unnecessary mobile data consumption.

Note: Only affects mobile networks (4G); Wi-Fi connections are unaffected.

Operation Steps

Step 1: Access Data Saver

Navigate to Settings > WLAN > Data Usage > Data Saver.

Step 2: Enable Data Saver

On the Data Saver page. Toggle the ON/OFF button to ON to enable Data Saver.

Step3: Enable Data Saver for Selected Apps

Toggle the ON/OFF button beside selected apps to ON to allow unrestricted data access while blocking others.

33.3 Mobile Network Settings

Using the built-in 4G Nano SIM card to provide cellular network connection, suitable for environments without Wi-Fi.

Operation Steps

Step 1: Insert the Nano SIM card

For detailed steps, refer to Section 5.2 in this manual.

Step 2: Access the Mobile Network

Navigate to Settings > WLAN > ... More > Mobile Network.

Step 3: Enable Mobile Data

On the Mobile Network page, toggle the ON/OFF button to ON to enable mobile data. Toggle the ON/OFF button for Roaming to ON if roaming is needed.

Step 4: Manage Mobile Data Usage

Tap App Data Usage to open the corresponding page:

• Enable Set Data Warning and set the threshold (e.g., 2GB) to receive warnings.
• Enable Set Data Limit and set the limit (e.g., 5GB) to restrict data usage.

33.4 Hotspot Settings

The S8 includes a built-in 4G LTE module, enabling it to function as a mobile hotspot.

Operation Steps

• Navigate to Settings > WLAN > ... More > Hotspot & tethering.
• For detailed Hotspot setup steps, refer to Section 5.2 in this manual.

Chapter 34 Device Settings

The Device Settings menu allows you to configure and manage key functions of the S8 Android head unit, enhancing usability and customization.

Main functions include:

1. Wallpaper & Screen Timeout – Set wallpapers and adjust screen auto-off time.

2. Sound Settings – Customize audio output and system sounds.

3. Location Status Display – Switch how location status is displayed on screen.

4. Bluetooth 2 (BT-2) – Access secondary Bluetooth connection options.

5. Default USB Connection – Define the default USB mode (e.g., Wired CarPlay/Android Auto, Wired Phone Mirroring).

6. Storage Management – Check available storage and free up space.

7. App Management – View, manage, or uninstall applications.

8. USB Video Output – Configure video output settings via USB.

34.1 Display Settings

Through Display Settings, you can choose a wallpaper for the S8 Android head unit from the built‑in options. and adjust the auto screen off time. For detailed wallpaper customization, see Section 8.3 Wallpaper in this manual.

Operation Steps

Step 1: Go to Settings > Device > Display > Auto Blackscreen.

Step 2: Choose the preferred auto screen-off time: Never, 30 seconds, 1 minute, 3 minutes, 5 minutes, 10 minutes, or 30 minutes.

34.2 Sound Settings

The Sound Settings allow you to adjust and control sound behavior on the S8 Android head unit based on personal preferences and driving conditions.

Available options include:

1. Touch Sound – Enable or disable touch feedback sounds.

2. Loudness Control – Turn loudness compensation on or off.

3. Amplifier Turn-On – Enable or disable the amplifier power function.

4. SCVC (Speed Compensated Volume Control) – Adjust to Low, Medium, High, or turn SCVC off.

These settings help optimize the audio experience, improve comfort, and support safer driving.

Operation Steps

Navigate to Settings > Device > Sound.

34.3 Location Status Display

The Location Status Display feature lets you select how the location status is shown (Mode 1 or Mode 2) and provides an option to enable Auto Synchronization, which automatically adjusts the device’s system time based on GPS signals.

Operation Steps

Step 1: Navigate to Settings > Device > Location Status.

Step 2: Select Mode 1 or Mode 2.

Step 3: Enable/disable Auto Syncronization.

34.4 Bluetooth 2

The Bluetooth 2 (BT-2) menu provides quick access to secondary Bluetooth functions, including Bluetooth tethering and Bluetooth-enabled device connection and management. For detailed instructions, see Section 4.2 System Bluetooth (Bluetooth 2) in this manual.

34.5 Default USB Connection

The Default USB Connection setting allows the S8 Android head unit to automatically launch specific smartphone integration functions when a device is connected via USB.

Operation Steps

Step 1: Go to Settings > Device > Default USB Connection.

Step 2: Select your preferred option:

• CarLink: Your Android phone will automatically launch Android Auto when connected.
• CarbitLink: Your smartphone will automatically launch Phone Mirroring when connected.
• None: Neither Android Auto nor Phone Mirroring will launch automatically.

Notes:

When CarLink is selected, an iPhone will not automatically launch Apple CarPlay via USB.

For more details on Apple CarPlay, Android Auto, and Phone Mirroring, see:

• Chapter 6 Car Link 2.0 App (For Apple CarPlay & Android Auto Connectivity)
• Chapter 7 Phone Mirroring

34.6 Storage Management

The Storage Management feature allows you to monitor and manage the S8 Android head unit’s internal storage, including system files, apps, media, downloads, and cache data. You can remove redundant files and uninstall infrequently used apps to free up space and maintain smooth system performance.

Operation Steps

Step 1: Enable Storage Manager

Navigate to Settings > Device > Storage.

Step 2: Enable Use Storage Manager

Tap Storage Manager to enter its settings page, then enable Use Storage Manager.

Step 3: Select Items for Removal (Photos & Videos)

Tap the Remove photos and videos button to open a pop-up window. Then select to remove backed-up files that older than 30, 60, or 90 days.

Step 4: Free Up Space by Removing Infrequently Used Apps

Tap FREE UP SPACE to enter the Remove items interface. Select infrequently used apps and tap FREE UP to uninstall them and release memory.

34.7 App Management

The App Management feature lets you view, control, and manage applications installed on the S8 Android head unit. You can open apps, force stop, uninstall, clear data/cache, and configure default permissions. Effective app management helps free up storage, improve performance, and ensure stable operation.

Operation Steps

Navigate to Settings > Device > Apps.

34.8 USB Video Output Setting

The S8 Android head unit supports HDMI and CVBS RCA video output to headreset monitors with compatible inputs by using ATOTO AC-HAV48 USB-to-CVBS RCA or AC-HAV68 USB-to-HDMI adapters (sold separately), allowing rear-seat passengers especially children to enjoy the video playback during the drive. The USB Video Output Setting menu provides a simple and efficient way to adjust how video content is displayed on the connected headrest monitors.

Operation Steps

Step 1: Access USB Video Output Setting

Go to Settings > Device > USB Video Output Setting.

Step 2: Configure Display Options

Within this menu, you can adjust the following:

• Horizontal Offset - Slide the bar to shift the video display left or right on the connected headrest monitors.
• Vertical Offset - Slide the bar to shift the video display up or down.
• Horizontal Stretching - Slide the bar to stretch or compress the video horizontally.
• Vertical Stretching - Slide the bar to stretch or compress the video vertically.
• Set Projection Apps - Tap the Screen Share button to select which apps you want to project to the connected headrest monitors.
• Restore Settings - Tap the Restore button to revert all settings to default.

Chapter 35 General Settings

The General Settings menu provides access to core configuration options for the S8 Android head unit. These settings allow you to customize safety, display, audio, and startup preferences, ensuring a driving experience tailored to your needs.

Available Options

1. Disable Video Playback While in Motion – Enable/disable video playback lock for safety.

2. Display OSD Time – Show or hide on-screen display time.

3. Mirror Display of Rear Camera – Switch rear camera image between mirrored and non-mirrored view.

4. Auto Start Switch – After setting an Auto Start App, toggle this switch to enable/disable automatic launch at startup.

5. Rear Camera Guide Line Switch – Enable/disable parking guide lines.

6. Static Reference Line – Switch from dynamic guidelines to static ones.

7. Touch Gesture Switch – Enable/disable gesture controls.

8. Default Media Volume Every Start – Reset media volume to default at each startup.

9. Audio Mix for Navi & Media – Allow navigation prompts to mix with media playback.

10. Auto Mute While Reversing – Automatically mute audio when the car is in reverse gear.

11. Touch Panel Illumination – Adjust button or panel backlight brightness.

12. Steering Wheel Audio Keys Mapping – Assign functions to steering wheel audio buttons.

13. Auto Start App – Set a specific app to launch automatically at startup.

14. Voice Button Shortcut – Choose between DriveChat or Google Assistant for the steering wheel voice button.

15. CarPlay/Android Auto Display Layout – Adjust layout for left-hand or right-hand drive vehicles via Steering Wheel Position settings.

35.1 Disable Video Playback While In Motion

This option controls whether a safety warning is displayed when the vehicle is moving and video playback is active.

The S8 head unit’s wiring harness includes a Parking Brake (-) cable that detects the vehicle’s handbrake status (if applicable).

• When correctly connected and this feature is enabled, a warning notice will appear on the video screen while driving.
• The warning disappears automatically once the vehicle is parked and the handbrake is applied.

Operation Steps

Navigate to Settings > General > Disable video playback while in motion and toggle the ON/OFF button to enable or disable the feature.

35.2 Display OSD Time

When enabled, the system time is shown on the video playback screen.

Operation Steps

Go to Settings > General > Display OSD Time and toggle the ON/OFF button to enable or disable this option.

35.3 Camera Input Settings

The Camera Input settings are used to manage and configure external camera signals connected to the S8 Android head unit. Available options include:

• Mirror Display of Rear Camera – Show a left-right reversed image (recommended if your rear camera outputs a reversed view).
• Rear Camera Guide Line – Enable or disable reversing guidelines.
• Static Reference Line – Switch from dynamic guidelines to static ones. (Note: On some vehicles, this feature may require a CAN decoder box to function properly.)
• Audio Mute While Reversing – Automatically mute audio when reversing. If disabled, you can set a media volume reduction level instead. (Note: Due to system limitations, this may not apply to certain apps.)

Operation Steps

Go to Settings > General, select the desired options and adjust as needed.

35.4 Custom Auto Start App

You can set a frequently used app to launch automatically when the S8 head unit starts.

Operation Steps

Step 1: Go to Settings > General > Custom Auto Start App.

Step 2: Tap Custom Auto Start App to open the setup interface.

Step 3: Tap Add (+ ) icon to view all available apps, then select one to set as an Auto Start App.

Step 4: Go to Settings > General > Auto Start Switch to enable Auto Start Switch in order to activate feature.

Step 5: To remove an app, press and hold its icon for about 2 seconds, then release.

Note: Google Maps is set as the default Auto Start App and cannot be removed.

35.5 Voice Button Shortcut Settings

The S8 Android head unit supports two AI voice assistants: DriveChat (pre-installed) and Google Assistant. You can select your preferred assistant according to personal needs.

• DriveChat – See Chapter 9 for details.
• Google Assistant – Developed by Google, it enables natural language interaction, voice commands for navigation, media, calls, schedules, weather, and more. It supports contextual understanding and intelligent recommendations.

Google Assistant Activation Methods

1. Voice Activation – Say “Hey Google” (requires voice wake-up enabled).

2. Button Activation – Press and hold the steering wheel voice button.

When using the SWC Learning function for voice assistant control, the system syncs with the assistant chosen in this menu (see Section 35.10).

3. Manual Activation – Tap the Google Assistant icon on the home screen.

Method 1: Voice Activation

By saying the activation phrase, such as “Hey Google” (ensure voice wake-up is enabled), you can launch Google Assistant.

Operation Steps

Navigate to Settings > General > Voice Button Shortcut.

Select either Google Assistant or DriveChat as your default voice assistant.

35.6 Touch Gesture Switch

The Touch Gesture feature enables quick and efficient control of key functions—such as the Equalizer app, brightness adjustment, and the multitasking menu—all through simple taps and scrolls.

Available Gestures:

1. Swipe up with two fingers - Open the multitasking menu

2. Tap with two fingers - Open the preset EQ and switch among preset 9 EQ modes

3. Swipe down with two fingers - Return to the Home Screen

4. Swipe left or right with two fingers - Go back to the previous menu

5. Tap with three fingers - Toggle the font size

6. Swipe up or down with three fingers - Adjust the screen brightness

Operation Steps

Navigate to Settings > General > Touch Gesture Switch and enable touch gesture feature.

Note: The Touch Gesture feature may not be supported in certain apps, such as navigation/map applications.

35.7 Default Media Volume Every Start

This feature allows you to set a fixed default media volume level each time the S8 Android head unit starts.

Operation Steps

Step 1: Access the Default Media Volume Every Start

Navigate to Settings > General > Default Media Volume Every Start.

Step 2: Enable the Default Media Volume Every Start

Toggle ON/OFF button to enable it.

Step 3: Set Current Volume Value

Tap Current Volume Value to set default media volume between 0-36.

35.8 Auto Mix for Navi & Media

This feature allows you to balance audio between navigation prompts and media playback.

Operation Steps

Step 1: Access the Auto Mix for Navi & Media

Navigate to Settings > General > Auto Mix for Navi & Media.

Step 2: Enable the Auto Mix for Navi & Media

Toggle ON/OFF button to enable it.

Step 3: Set Mix Ratio

Tap Mix Ratio to adjust the volume balance between media playback and navigation voice guidance from 0 to 20.

35.9 Panel Illumination

The Panel Illumination feature offers 7 preset color modes and also supports custom color adjustment to match your personal preference.

Operation Steps

Step 1: Access the Panel Illumination

Go to Settings > General > Panel Illumination.

Step 2: Configure the Panel Illumination

You can:

• Enable Automatic - The panel cycles through the 7 preset colors gradually in sequence.
• Disable Automatic - Select a preset color, or customize by dragging the color dot to any position on the color palette. Tap the Return icon to revert back to the last chosen preset color.

35.10 Steering Wheel Control (SWC) Learning Configuration

The Steering Wheel Control (SWC) Learning function allows you to operate key functions of the S8 Android head unit—such as track switching, volume adjustment, call answering, and voice assistant activation—directly from your steering wheel buttons. This eliminates the need for touchscreen interaction, enhancing driving safety and convenience.

35.10.1 Compatibility Requirements

• Required Vehicle Feature: Your car must be equipped with factory steering wheel controls (SWC).
• Signal Type: The S8 directly supports resistive analog SWC signals.
• Digital CAN Bus Systems: Vehicles with digital CAN Bus SWC signals require a third-party CAN Bus to Resistive Analog adapter (sold separately) to retain SWC functionality.
• How to Check: Consult your vehicle’s owner manual or contact the manufacturer to determine if your SWC system uses resistive analog or digital CAN Bus signals.

35.10.2 How to Map SWC Buttons

The S8 supports steering wheel control (SWC) button mapping, enabling direct control of the head unit from your steering wheel.

Operation Steps

Step 1: Access SWC Learning Interface

Navigate to Settings > General > Setup Steering Wheel Audio Key or go to Home Screen > App Drawer > SWC Setup.

Step 2: Map Buttons

• Press and hold a button on the steering wheel.
• Short press the desired function button icon on the SWC Learning interface (e.g., Volume Up). The icon color will change.
• Release the steering wheel button. Repeat for each function you want to program.

Step 3: Save Settings

Tap Save and Exit button to store the configuration.

Warm Reminder:

If your vehicle does not have factory SWC, you can use the AC-44F8 Wireless Steering Remote Control or AC-44F20 Smart Wireless Remote Controller (sold separately) to add steering wheel control functionality. Both work with the S8 Android head unit and most other Android head units.

AC-44F8 Wireless Steering Remote Control Functionality

The AC-44F8 provides steering wheel-style controls for vehicles without factory SWC.

Supported Functions:

1. Volume Control – Adjust audio volume or mute.

2. Playback Control – Play/pause music and switch tracks.

3. Call Control – Answer/Reject calls.

4. Voice Assistant – Activate DriveChat or Google Assistant.

Operation Instructions:

1. Transmitter Installation

• Location: Install on the steering wheel for easy access.
• Connection: Wireless communication with receiver ensures stable signal.

2. Receiver Installation

• Connect black cable to Chassis/Ground (-) on the S8 wiring harness.
• Connect red cable to Accessory/Ignition (+).
• Connect white cable to one of the Steering Wheel Key (#) cables.
• The receiver will automatically communicate with the S8 head unit.

3. Using the Remote Control

Control S8 functions (volume, music, calls, etc.) without taking hands off the steering wheel.

4. Setup & Usage

Scan the QR code below and select AC-44F8 model to vide detailed instructions.

AC-44F20 Smart Wireless Remote Controller Functionality

AC-44F20 is a newly released controller for vehicles without SWC or for users who prefer physical buttons over touchscreen control. It functions as an external control panel for the S8.

Supported Functions:

1. Volume Control – Adjust audio volume.

2. Playback Control – Switch tracks or radio stations.

3. Call Control – Answer/Reject calls.

4. Voice Assistant – Activate DriveChat or Google Assistant.

5. Home Screen – Return to S8 home screen.

6. Screen Control – Wake or put the S8 screen to sleep.

Operation Instructions:

1. Transmitter Installation

• Mount in a convenient location:
  • On the front of the S8 screen
  • On the dashboard
  • Or beneath the floating screen (FlexView Pro models).
• Connection: Wireless communication with receiver ensures stable signal.

2. Receiver Installation

• Connect black cable to Chassis/Ground (-) on the S8 wiring harness.
• Connect red cable to Accessory/Ignition (+).
• Connect white cable to one of the Steering Wheel Key (#) cables.
• The receiver will automatically communicate with the S8 head unit.

3. Using the Remote Control

Operate S8 functions (volume, track, calls, home, screen sleep/wake) using tactile buttons.

4. Setup & Usage

Scan the QR code below and select AC-44F20 model to vide detailed instructions.

35.11 Steering Wheel Position

The Steering Wheel Position setting lets you adjust the Apple CarPlay / Android Auto screen layout to match your vehicle type, whether left-hand drive or right-hand drive.

Operation Steps

Step 1: Go to Settings > General > Steering Wheel Position.

Step 2: Tap to switch the steering wheel position to left or right, according to your vehicle setup. Then the Apple CarPlay / Android Auto screen layout will switch automatically.

Chapter 36 Users & Accounts Settings

The Users & Accounts menu on the S8 Android head unit allows you to manage system accounts, configure security and location services, select language input, access Google services, and reset the system.

Key Functions

1. Configure Location Services

2. Configure Security Settings

3. Select Language & Input

4. Configure Google Services

5. Reset System

6. Manage Accounts

36.1 Location Services

The Location Services allow the system to access geographic information. By enabling this feature, the S8 can:

• Provide accurate navigation directions
• Search for nearby services
• Offer emergency assistance
• Deliver personalized service recommendations

Operation Steps

Navigate to Settings > Users & Accounts > Location.

36.2 Security Settings

The Security Settings feature allows you to monitor and manage the security status of the S8 Android In-Vehicle Infotainment (IVI) system. It includes checks for:

• Google Play Protect
• Find My Device
• Security Update Status

Operation Steps

Navigate to Settings > Users & Accounts > Security.

36.3 Language & Input

The Language & Input feature allows you to configure the system language and select keyboard input methods for the S8 Android head unit.

36.3.1 Language Settings

The Language Settings feature lets you choose the display language for the system.

The S8 Android head unit supports multiple languages, including English, French, German, Japanese, and many more.

Operation Steps

Step 1: Navigate to Settings > Users & Accounts > Language & Input.

Step 2: Tap Languages to open the list of available languages.

Step 3: Select your preferred language:

Press and drag your preferred language to the top of the list, or simply tap it to set it as the system language.

Step 4: To add or remove languages:

• Tap + Add a language to add a new language.
• Tap the More Options icon (three dots at the top-right) to remove one or more languages from the list.

36.3.2 Input Settings

The Input Settings feature allows you to configure the virtua keyboard and connect a physical keyboard.

Operation Steps

Step 1: Navigate to Settings > Users & Accounts > Language & Input.

Step 2: Tap Virtual keyboard to configure keyboard settings.

Step 3: Follow on-screen instructions to select input methods or connect a physical keyboard.

36.4 Google Services

The Google Services feature allows you to manage Google-related functions and control data synchronization and privacy permissions. This includes services such as Google Play Store, Google Maps, and Voice Assistant.

Operation Steps

Step 1: Navigate to Settings > Users & Accounts > Google Settings.

Step 2: Manage the available Google services according to your preferences.

Step 3: Adjust synchronization settings and privacy permissions as needed.

36.5 System Reset

The System Reset feature allows you to restore default settings, resolve performance issues, or remove unwanted data. Available reset options include:

1. Reset Network Settings – Restores WiFi, mobile data, and Bluetooth to default.

2. Reset App Preferences – Resets disabled apps, default apps, and permission settings.

3. Factory Data Reset – Erases all personal data, apps, and settings from the device.

Note: All personal data will be erased and cannot be recovered. Before performing a reset, back up important files to an external storage device.

Operation Steps

Step 1: Go to Settings > Users & Accounts > System Reset.

Step 2: Choose the desired option: Network Settings, App Preferences, or Factory Data Reset.

Step 3: Confirm your selection and follow on-screen instructions to complete the reset.

36.6 Manage Accounts

The Manage Accounts feature allows you to add, sync, and manage accounts on your S8 Android head unit. You can sync a Google account or register and log in with an ATOTO account. This feature also supports automatic synchronization of app data for each account.

Operation Steps

Step 1: Navigate to Settings > User & Accounts > Account.

Step 2: Log in to Your Account

• Google Account – Enter your Google credentials to log in. If you do not have a Google account, register one first.
• ATOTO Account – Enter your ATOTO account credentials to log in. If you do not have an ATOTO account, register one first.

Chapter 37 System Settings

The System Settings allow users to configure and manage basic system-related functions, including:

1. Date and Time

2. Accessibility

3. Screen Lock

4. About Device

5. Device Info

6. System Startup Logo

By optimizing system settings, users can make the in-vehicle system better suited to their personal preferences, thereby enhancing the overall driving experience.

37.1 Date & Time Settings

The Date & Time Settings feature allows you to set the date, time, and time zone on the S8 Android head unit. You can switch between 24-hour and 12-hour formats as needed. The system supports automatic network time synchronization, ensuring accurate time display for navigation, schedule reminders, and log recording.

Settings Options:

1. Use Network-Provided Time: Enable/disable Use network-provided time.

2. Use Network-rovided Time Zone: Enable/disable Use network-provided time zone.

3. Time Format: Choose between 24-hour and 12-hour formats as needed.

Operation Steps

Step 1: Navigate to Settings > System > Date & Time.

Step 2: Configure the above options as needed.

37.2 Accessibility Settings

The Accessibility Settings feature allows users to customize visual, auditory, and interaction-related functions to enhance usability for all drivers. Key options include:

1. Screen Readers – Supports text-to-speech output and related settings.

2. Magnification – Enable or disable the Magnification Shortcut to zoom on-screen content.

3. Interaction Controls – Configure:

• Dwell Timing – Time before a long press is registered.
• Power Button Ends Call – End calls with the power button.
• Touch & Hold Delay – Adjust the duration for long press recognition.
• Time to Take Action – Accessibility timeout settings.

4. Audio & On-Screen Text – Configure:

• Mono Audio – Combine stereo channels into one.
• Audio Balance – Adjust left/right audio output.
• Caption Preferences – Enable and customize subtitles/captions.

Operation Steps

Step 1: Navigate to Settings > System > Accessibility.

Step 2: Adjust the options according to your personal needs.

37.3 Screen Lock

The Screen Lock feature protects your S8 Android head unit from unauthorized access and safeguards personal data such as navigation history and account information. It supports two locking methods: Password Lock and Bluetooth Lock/Unlock.

1. Password Lock

Unlock the screen by entering a preset password.

Operation Steps

Step 1: Navigate to Settings > System > Screen Lock.

Step 2: Toggle the ON/OFF button to open the Screen Lock Settings interface.

Step 3: Set a password:

• Enter the Current Password
• Set a New Password
• Confirm the New Password
• Tap Save

Note: The initial password is 0123.

2. Bluetooth Lock/Unlock

Automatically locks or unlocks the screen based on the proximity of a paired Bluetooth device (e.g., your mobile phone).

• Bluetooth Lock: The screen locks automatically when the paired device disconnects.
• Bluetooth Unlock: The screen remains unlocked when a paired device is nearby.

Operation Steps

Step 1: Navigate to Settings > System > Screen Lock.

Step 2: Toggle ON/OFF button to open the screen lock settings interface.

Step 3: Tap Unlock with Bluetooth to see the list of paired phones.

Step 4: Add one or more paired phones from the list. When a paired phone is nearby, the screen will unlock within 1–2 seconds.

37.4 About Device

The About Device menu provide detailed information about your S8 Android head unit, useful troubleshooting, obtaining system updates, and managing the device.

Operation Steps

Step 1: Navigate to Settings > System > About.

Step 2: Review the device information displayed, such as model number, software version, and other system details.

37.5 Device Info

The Device Info page displays key identification numbers for your S8 Android head unit:

• ICCID (Integrated Circuit Card Identifier): Identifies the included Nano 4G SIM card.
• IMEI (International Mobile Equipment Identity) : Identifies the S8 Android head unit itself.

Operation Steps

Step 1: Navigate to Settings > System > About.

Step 2: Tap Device Info to view ICCID and IMEI numbers.

Notes:

• You may be asked to provide the ICCID when activating or verifying mobile network services.
• The IMEI number may be required for technical support or warranty service.

37.6 System Startup Logo

Disclaimer on Boot Logo Usage

This product provides options for displaying a boot logo, including the system default, our company’s brand logo, or a user-uploaded image.

• The company brand logo is for use only on our products.
• The Android™ logo is a trademark of Google LLC. This device is based on the Android open-source system and is not endorsed by or affiliated with Google LLC.
• Any user-uploaded logo or image remains the sole responsibility of the user. The manufacturer does not claim ownership of, nor grant rights to, any third-party trademarks, logos, or copyrighted materials. Unauthorized use of third-party logos may constitute trademark or copyright infringement.

The System Startup Logo settings allow you to use a built-in startup logo, or customize your own logo to display when the S8 Android head unit powers on.

Operation Steps

Step 1: Access the System Startup Logo

Go to Settings > System > System Startup Logo.

Step 2: Select the Built-In System Starup Logo

Select your preferred system startup logo between ATOTO and Powered by Android.

Step 3: Customize Your Own System Startup Logo

Tap the left or right Navigation Arrow icon to check the requirements for your logo image. You will see requirements below:

• Put your logo image in a folder named mycar in the root directory of an external storage device.
• The resolution of the image should be at least 1280x800.

Chapter 38 Troubleshooting

Important Notes:

1. If you have checked the points described in the list and the problem persists, turn off the vehicle for 10 seconds and then turn it back on.

2. If issue remains, contact our Customer Service for further assistance.

1. No response / Unit not powered on / Black Screen

Causes

• ACC/B+ wires are reversed or not connected properly
• Fuse blown
• Car battery voltage too low

Solutions

• Check if ACC (ignition power) and B+ (constant power) are wired correctly
• Check if the fuse on the power harness is blown
• Measure car battery voltage (should be above 12V). Recharge or replace the battery if needed.

2. No Sound Output / Low Volume

Causes

• Speaker wires reversed or not connected
• Head unit muted or volume too low
• Factory amplifier present but no decoder installed

Solutions

• Check speaker wiring
• Confirm head unit volume and EQ settings
• If car has factory amplifier, install proper CAN decoder or harness

3. Steering Wheel Control Not Working

Causes

• CAN bus decoder not installed
• Decoder not compatible with the car model
• Steering wheel control wires not properly programmed

Solutions

• Confirm if your car requires a CAN decoder and install the correct model
• Go to SWC Setup app on the head unit and reset the key functions

4. Weak GPS Signal / Inaccurate Positioning

Causes

• GPS antenna blocked by metal parts
• Antenna not fixed or connector loose

Solutions

• Install GPS antenna on dashboard center or open area without obstruction
• Ensure antenna connector is firmly plugged in
• For first positioning, drive in open space for a few minutes

5. System Freezes / Runs Slowly

Causes

• Too many apps running and consuming memory
• System cache buildup
• Some apps incompatible

Solutions

• Clear background apps
• Clear cache in Device settings
• Avoid installing too many third-party apps
• Restore factory settings if necessary

6. Cannot Play a Media File

Causes

• USB drive format not supported (e.g., NTFS or exFAT instead of FAT32)
• File type not supported (e.g., unsupported video/audio format)
• USB drive capacity too large or partition issue
• USB port connection unstable or damaged
• Excessive folders/files causing slow reading or recognition failure

Solutions

• Reformat USB drive to FAT32 (recommended)
• Use common supported formats (MP3, WMA, AAC, MP4, AVI, etc., depending on head unit specs)
• Try with a USB drive ≤ 64GB for better compatibility
• Check USB cable/port connection, replace cable if needed
• Organize files (avoid too many subfolders, keep filenames simple).

7. No Video Playback or Photo Slideshow

Causes

• The parking brake wire connected to your vehicle detects the handbrake is not applied. For safety reasons, the system automatically disables video and picture playback while the vehicle is in motion.

Solutions

• Turn off the Disable video playback while in motion option under General Settings. But we strongly recommend keeping this safety feature to protect both the driver and passengers.

8. Bluetooth Streaming Not Working

Causes

• Apple CarPlay or Android Auto is active. Wireless Apple CarPlay/Android Auto connection will occupy Bluetooth channel leading to Bluetooth streaming failure on the head unit. Wired Apple CarPlay/Android Auto connection does not use Bluetooth channel but the system will still automatically prioritize Apple CarPlay/Android Auto over Bluetooth streaming
• Bluetooth not enabled on phone or head unit
• Bluetooth pairing incomplete or disconnected
• Phone audio player not running or paused
• Firmware or Bluetooth cache error

Solutions

• Disconnect Apple CarPlay/Android Auto
• Ensure Bluetooth is turned on both on the phone and head unit
• Delete pairing records on both devices, then re-pair
• Open the music app on the phone and start playback
• Restart phone and head unit; if issue persists, clear Bluetooth cache or update firmware

9. Bluetooth Cannot Connect / Poor Sound Quality

Causes

• Phone Bluetooth cache error
• Head unit only supports SBC/AAC codecs, not aptX
• Bluetooth interference

Solutions

• Delete pairing records and reconnect
• Check supported Bluetooth codecs on head unit
• Avoid using in high-interference environments

10. Cannot Connect to Apple CarPlay/Android Auto

Causes

• Data cable does not support high-speed transfer or is damaged
• Bluetooth/WiFi pairing issue
• Phone system version too low
• Phone is already connected to another Bluetooth device
• For wireless Apple CarPlay/Android Auto, either the phone or head unit is connected to a WiFi network

Solutions

• Use original or high-quality data cable
• Delete paired devices on both phone and head unit, then reconnect
• Update phone system to the latest version
• Try wired connection first to confirm function, then switch to wireless mode
• Disconnect phone from any other Bluetooth devices
• For wireless Apple CarPlay/Android Auto, ensure WiFi on both the phone and head unit is enabled but not connected to any WiFi network (WiFi serves as the direct link channel)

11. Poor Radio Reception / Heavy Noise

Causes

• Car antenna not connected
• Antenna amplifier not powered
• RDS/TA/AF functions cause frequent station switching

Solutions

• Check if antenna is connected to correct port on the head unit
• Ensure antenna amplifier has power (usually connected to ANT or AMP control wire)
• Turn off RDS/TA/AF when signal is weak

12. Reverse Camera Not Displaying / Abnormal Display

Causes

• Camera not powered or power wired incorrectly
• Video cable not connected to the correct RCA AV-IN port
• Reverse camera function not enabled in settings
• Original or third-party reverse camera outputs video signal in CVBS format

Solutions

• Connect camera power to reverse light positive wire
• Ensure video cable is plugged into the head unit’s camera input port
• Enable Reverse Camera function in settings
• For certain S8 models, specific OEM settings are required:
  • Go to Settings > System.
  • Quickly tap System four times.
  • Enter password 3368 to access OEM Settings.
  • Scroll down to find Switch Backup Camera.
  • Set Switch Backup Camera to DEFAULT.
  • Reboot the head unit after completing the steps.

13. Rear Camera View is Not Reversed

Causes

• On selected S8 models both Mirror Display of Rear Camera option in the General Settings and Rear Camera Mirror option in the Mirror Settings of the DVR app must be enabled.

Solutions

• Enable both Mirror Display of Rear Camera (General Settings) and Rear Camera Mirror (DVR app > Mirror Settings) to correct the display orientation.

14. External Amplifier Not Turn On

Causes

• Incorrect or loose wiring between the external amplifier and the Amplifier Turn-on (+) wire in the wiring harness.
• The Amplifier Turn-on option is disabled in settings.

Solutions

• Verify that the external amplifier is correctly and securely connected to the Amplifier Turn-on (+) wire on the wiring harness.
• Enable the Amplifier Turn-on option under Device settings.

15. SIM Card Not Recognized / Not Working

Causes

• SIM card not properly inserted or wrong orientation
• Poor contact or damaged SIM slot
• SIM card type incompatible (e.g., nano/micro, 3G/4G)
• System not activated or network not recognized
• SIM locked by PIN or inactive
• Incorrect APN settings

Solutions

• Reinsert SIM card correctly, ensure slot is clean
• Use an active SIM card with data
• Check network mode and switch to correct band/operator
• Set correct APN parameters
• If still not working, consider SIM slot replacement or firmware update

16. Cannot Connect to Internet

Causes

• WiFi antenna disconnected or damaged
• Poor contact or loose connector
• Incorrect WiFi password

Solutions

• Check and reconnect WiFi antenna
• Enter the correct network password
• Test with a different WiFi network

17. Cannot Find FM/AM Stations

Causes

• Antenna disconnected or damaged
• Poor contact or loose connector
• Power antenna connection left out
• Weak or no signal in area
• Software not updated or incorrect band setting

Solutions

• Check and reconnect antenna
• Connect the Power Antenna wire from the ATOTO harness to the radio antenna or a thrid-party antenna adapter
• Try searching in different locations
• Verify FM/AM band settings
• Update firmware or radio software

18. Time/Date Cannot Be Saved

Causes

• Settings lost after factory reset
• Incorrect wire connection

Solutions

• Enable Use network-provided time in the System settings
• Ensure correct wiring of Accessory/Ignition (+) & Constant/Battery Power (+) from ATOTO harness to vehicle harness

19. Caller Cannot Hear Me

Causes

• Built-in microphone damaged or blocked
• Poor microphone connection
• External microphone installed too far from mouth

Solutions

• Check microphone for blockage or damage
• Test with Bluetooth headset
• Switch call to your phone to verify if the issue is phone-related
• Install the included external microphone 20-30 cm from your mouth

20. Cannot Hear Caller

Causes

• Volume too low or muted
• Poor speaker connection
• Call audio disabled in Bluetooth Settings (Android phone)

Solutions

• Increase volume and unmute
• Test speaker with music
• Enable Call audio in Bluetooth Settings (Android phone)
• Test with another phone

21. Screen Shows "No Signal" Without Rear Camera

Causes

• Wrong video input selected
• No camera connected or signal cable disconnected
• System defaults to reverse camera mode
• Rear Camera (+) wire from ATOTO harness accidentally connected
• Software bug or signal detection error

Solutions

• Check video input settings
• Disable reverse camera display
• Verify cable connections
• Insulate Rear Camera (+) wire with electric tape
• Update firmware/software

22. Touchscreen Unresponsive

Causes

• Poor or damaged touch cable
• System freeze or software error
• Touchscreen hardware damage
• Electrostatic or high temperature effects
• Loose screws (S8 models with FlexPro View structure)

Solutions

• Restart the unit
• Check touch cable connection
• Replace touchscreen if hardware damaged
• Update firmware or factory reset
• Check and tighten all screws

23. App Auto Launches Upon Head Unit Startup

Cause

• Custom Auto Start App feature and Auto Start Switch enabled in General settings

Solution

• Turn off Auto Start Switch in General settings

Chapter 39 Technical Specifications