Solution:
1. Exit the APP and turn off the bluetooth switch, and re-open the binding attempt.
2. If the watch cannot be found in the Mi Fitness APP, you can place your watch close to the phone, or go to a place with few Bluetooth devices to search and add it again.
3. If the search still cannot be found, check whether there is watch information in the Bluetooth settings of the mobile phone, clear the Bluetooth pairing information of the watch, and then enter the homepage of Mi Fitness APP, and add the device again. Then re-add the binding.
4. Restart the watch or mobile phone, reset the watch and try to change the environment.
Does it help?