1. Try to connect to other earphones
2. Turn off the phone WIFI temporarily, and then try to connect to Bluetooth;
3. If earphones supports multi-device pairing and connection, it is recommended that disconnect the Bluetooth connection with other devices before trying.
Tip:
The initialization names of different earphones are different, and the pairing methods of different earphones will also be different (for example, some earphones can be paired by long pressing the power button, and some earphones are clicking the power button), so it is recommended that read the user guide.
Does it help?