2. This is caused by the mismatch of pairing codes, and the solution is as follows: 1. First find the Bluetooth option in the phone settings interface, and then click Open. 2. In the open Bluetooth settings, click Open Bluetooth, and at the same time open Bluetooth to open the detection switch.
3. The solution to incorrect 3.pin code or pairing key is as follows: Re-enter because when connecting Bluetooth, the pairing code requires the same input from both devices, so you can try to re-enter it first to see if it was wrong before.