What should I do if the PIN or pairing key is incorrect and I can't pair with the Bluetooth headset?

Insert the headset into the charger, then press and hold it until the red and blue lights flash alternately, and then try again.

After unbinding, restart the phone and try again.

Pairing connection method is:

1. Turn on the Bluetooth headset switch, and press and hold the switch until the indicator light flashes alternately in red and blue to enter the pairing state;

2. Turn on the Bluetooth function of the mobile phone, set the Bluetooth of the mobile phone to "all people can see" or be searched or turned on for detection, and search for Bluetooth devices;

3. After finding it, select the pairing connection. If prompted for the password, enter the pairing password: 0000 (some pairing passwords are: 1234 or 8888) on the mobile phone, and the pairing is completed after the connection is successful;

4. When you make a phone call, you can answer it with a Bluetooth headset; Play music on your mobile phone and enjoy music on your Bluetooth headset.

Capture mode of Bluetooth module log:

Capture btsnoop log of automatic connection log

Settings-> Other advanced settings > developer options-> [Open Bluetooth packet log], [Open Bluetooth debug log]

Turn on Bluetooth and pair it with Bluetooth headset again.

Start the operation to reproduce the problem, restart the phone, dial * # * # 284 # * * in the dialing interface, and find that the connection cannot be reconnected.

In the file manager->; Mobile phone /sd card/-> Find all files with timestamps of files btsnoop_hci.log and btsnoop_hci.log.xxxxxx

In the file manager->; Mobile phone /sd card/-> 1 minute later /sdcard/MIUI/debug_log/ will have a time-stamped compressed package file.

Upload the files you saw in steps 4 and 5.