1.The wireless CarPlay adapter working principle is uses Bluetooth to establish a pairing between the iPhone and the vehicle,then switches to using WiFi to maintain the wireless connection.After the Bluetooth pairing is successful,the iPhone WiFi will automatically connect to the adapter's WiFi and then disconnect the Bluetooth connection by default.2.The Wireless CarPlay HDMl adapter is only support car models with wired CarPlay function.3.Please make sure that after the adapter is connected to the power supply in the car, the indicator light flashes during the connection process and stays on after the connection is successful.4.Please choose the right audio output channel when use wireless carplay and HDMl function.