There is no response at all after plugging the product into the vehicle's USB port. How can this be solved?

1: Observe how the indicator light turns on: Power connected: solid red; Vehicle communication successful: flashing blue; Phone connection successful: solid blue

2: Check whether the phone can find the device's Bluetooth and WiFi

3: Plug the device into another USB port and observe whether the indicator light turns on

4: If the device light does not turn on, contact customer service for a replacement device