The S4 STC-9909 is a high-performance Android car entertainment and navigation system designed for modern vehicle upgrades. Equipped with a UIS8581 8-core automotive-grade processor, a 9-inch QLED HD display, wireless CarPlay, Android phone connectivity, dual-band WiFi, 4G internet access, dual-mode navigation, AHD rear camera support, and professional audio tuning, it delivers a smarter and more connected driving experience.
With powerful hardware, stable connectivity, rich multimedia functions, and extensive vehicle compatibility, the S4 STC-9909 is suitable for distributors, automotive electronics brands, installers, and OEM/ODM projects.
| Item | Specification |
| Model | S4 STC-9909 |
| Operating System | Android |
| Processor | UIS8581 Automotive-Grade Chip |
| CPU | 8-Core |
| CPU Frequency | Up To 1.8GHz |
| Memory | 4GB RAM |
| Storage | 64GB ROM |
| Display Size | 9 Inch |
| Display Type | QLED |
| Resolution | 1280 × 720 |
| Internet | 4G |
| WiFi | 5GHz + 2.4GHz Dual-Band |
| Bluetooth | Bluetooth 5.0 |
| Phone Connectivity | Wireless CarPlay, Android Auto |
| Navigation | GPS + BeiDou, GPS + GLONASS |
| Rear Camera Support | 1080P / 720P AHD |
| Audio System | 32-Band EQ |
| Audio Output | 4.1 Channel Surround Sound |
| Multimedia | 1080P Video, Lossless Audio |
| Ambient Lighting | RGB Multi-Color Lighting |
| USB Interface | Dual USB |
| FM Radio | Supported |
| Cooling System | Fan Interface Supported |
| Customization | OEM / ODM Available |
Powered by the UIS8581 automotive-grade chipset, the system features an 8-core architecture running at up to 1.8GHz. Combined with the Android operating system, it delivers smooth multitasking, fast app launching, responsive navigation, and stable multimedia performance even during long driving sessions.
The S4 STC-9909 comes with a 4GB RAM and 64GB ROM configuration, with multiple memory options available for different project requirements. Large storage capacity allows users to install more applications, store offline maps, and save multimedia content without affecting system performance.
Featuring a 9-inch QLED display with 1280×720 resolution, the screen delivers vivid colors, sharp image quality, and excellent visibility. Accurate color reproduction and enhanced brightness ensure clear viewing even under strong sunlight.
The system supports wireless CarPlay and Android phone connectivity, enabling seamless access to navigation, calls, messages, music, and voice assistants directly from the touchscreen. Automatic reconnection provides a convenient user experience every time the vehicle starts.
Built-in 4G network support, 5GHz + 2.4GHz dual-band WiFi, and Bluetooth 5.0 provide fast and stable connectivity for navigation, music streaming, hands-free calling, and online applications. The dual-band WiFi design improves transmission speed and connection stability.
The navigation system supports GPS + BeiDou and GPS + GLONASS dual-mode positioning. Multiple satellite systems improve signal reception, route accuracy, and navigation reliability in urban areas, highways, and complex driving environments.
The unit supports both 1080P and 720P AHD rear camera inputs, providing clear reverse images and enhanced parking assistance. High-definition video improves visibility and driving safety during reversing operations.
Equipped with a 32-band EQ and 4.1-channel surround sound output, the system allows users to independently adjust audio frequencies for a more immersive listening experience. Enhanced sound customization makes it suitable for various music preferences and vehicle audio setups.
The S4 STC-9909 supports 1080P full-format video playback and lossless audio formats. Whether streaming online content or playing local media files, users can enjoy high-quality entertainment on the road.
The built-in RGB ambient lighting system supports multiple color options and dynamic lighting effects. Users can customize interior lighting styles to create a more personalized and modern driving atmosphere.
The system supports an external cooling fan interface and stable power supply voltage management. Optimized thermal design helps maintain reliable operation, reduces heat buildup, and extends the service life of the head unit.
Multiple expansion ports including dual USB interfaces provide convenient connectivity for external devices, media storage, accessories, and future system upgrades.
The S4 STC-9909 supports OEM and ODM customization services. It is compatible with more than 95% of mainstream vehicle models worldwide, making it suitable for automotive brands, distributors, and customized vehicle infotainment projects.
Upgrade factory head units with a larger touchscreen, Android platform, navigation, and wireless smartphone integration.
Provide accurate route guidance, real-time positioning, and convenient access to communication and entertainment functions.
The 32-band EQ and 4.1-channel output make it suitable for upgraded vehicle audio systems.
Stable connectivity, navigation functions, and broad vehicle compatibility support commercial vehicle applications and fleet management projects.
Ideal for private label programs, vehicle manufacturers, distributors, and customized automotive infotainment solutions.
