Solution:
1. Make sure the band charged fully and try again after holding it as close to the phone as possible.
2. Whether to open the Bluetooth of Zepp Life (Previously Mi Fit) and network permission.
3. If the connection fails after the above operation, please try to switch the Bluetooth of the mobile phone once or restart the mobile phone.
4. If the connection is still not available, please try to change the phone.
5. If more than one mobile phone cannot be bound, it is suggested to apply for after-sales service.