Xiaomi Mi Smart Band 4C User Manual page 6

2. Sign in to your Mi account in the app, and select the
corresponding band to pair with your phone.
Note: Select the Bluetooth device in the list whose
identification code matches the one on the band to pair.
Add device
Mi Smart Band 4C
Mi Smart Band 4C XXXX
Searching for devices
Couldn't find devices to add?View help.
Identification Code
5
XXXX
Pair first