• Check If your car has optic fiber(Ignore if no optic fiber), need to relocate it to android harnes  Click for details
• Some BMW cars require connection to the AUX port to output sound

• Aux has two switching modes, manual and automatic
  
• Some models not support Automatically switch AUX and need to be set to manual mode((For vehicles with the CCC system, only manual mode is supported)

The following settings are for vehicles equipped with NBT, CIC, or CCC systems. If your car has EVO, please scroll to the bottom of page

Automatic modes:

Go to System->AUX setting->Check "Automatically switch AUX" 

Manual modes:

If the AUX auto switching mode does not work, you can set it to manual mode

Go to System->AUX setting->UnCheck "Automatically switch AUX", then go to OEM radio and Choose “Audio-AUX”, touch screen to android, sound out.

For car without oem screen models, choose "AUX" on CD panel

Note：

1"AUX Switching scheme" is Amplifier selection, "Scheme A" is for " Alpine ", "Scheme H" is for "Harman ", "Customize" is for other brand, Choose it according to head unit brand

2.Whether in manual or automatic mode, keep values of AUX 1 and AUX 2 at "0"

AUX setting for EVO:

For vehicles with the EVO system, the audio is transmitted via Bluetooth.

1. Enter Android Factory Mode and make sure Bluetooth transmission is enabled   

Path: Settings → Factory (Password: 2018 or 1314) → Function

2.Go to Android Settings and check the Bluetooth transmitter name (default: QCOM-BTD).

Path: Apps → Settings → Connected devices → Pair new device

3.Enter the original car Bluetooth interface, search for “QCOM-BTD,” and pair/connect. After a successful connection, go to the original Bluetooth music interface, then return to Android and play music—the sound will work.