Non-destructive installation: original plug and play car cable, no cutting wire, no breaking wire. No need to remove the factory screen, support Carplay and Android Auto. After installation, there is no change inside the car. Please contact customer service for any problems during installation. Original car knob control: the original car function will be retained after the addition of decoder, one key to switch the original car system/decoder, retain the original car knob, the original car phone button, the original car reversing camera. Support mirroring function and YouTube: just open the phone mirroring function, you can cast your phone to the car screen, you can view videos/pictures, etc., while supporting YouTube, adding fun to your driving journey. Support wired/wireless carplay & Android Auto: Support using GPS, music, Siri,Calling etc. Wireless CarPlay and Android Auto make driving more convenient, they are the best driving options. Pre-shopping Notes - Compatible with 2014-2018 Audi A3/S3. Only fit for MIB system, MHS2 system, MIB1 system, not fit for MIB2 High system. If you aren't sure whether this retrofit module works with your car, please contact us and send the picture of system version number and central control of car to us. (Menu----Setup MMI----version information----Software version).