Several factors will lead to the failure of the synchronization between the Redmi Watch 5 Lite and the mobile phone, such as weak Bluetooth or internet connection, firmware version and incompatibility issues.
To solve the problem of synchronization, please refer to the following details:
1. Refresh the interface in the Mi Fitness APP and reconnect;
2. Turn off the Bluetooth of the mobile phone and turn it on again. Reconnect the watch to the Mi Fitness APP;
3. Restart the watch, restart the phone, and try to reinstall the Mi Fitness APP to check if the problem is solved.