The synchronous dial of Xiaomi 4 bracelet always fails.

If the dial-up in mi band cannot be synchronized or the connection fails during synchronization, I suggest you:

1. Pull down the synchronization operation again;

2. End the Xiaomi Sports APP and re-enter the attempt;

3. Switch the mobile phone Bluetooth once or restart the mobile phone;

4. If you are using an Apple mobile phone, you can view the mi band device in the Bluetooth settings list of the mobile phone, click Ignore this device, and then turn on and off the Bluetooth attempt of the mobile phone.