The Xiaomi Watch S3 (Bluetooth version) supports accessing the network shared by the mobile phone via Bluetooth, meeting the needs of the watch to connect to the Internet. Keep the watch and the Mi Fitness APP connected normally, and wait for the watch to connect to the network successfully.
The Xiaomi Watch S3 (eSIM version) supports accessing the network shared by the mobile phone via Bluetooth and using the independent connection function, meeting the needs of the watch to connect to the Internet. Keep the watch and the Mi Fitness APP connected normally and activate the eSIM function through the APP. Then, you can select the independent communication mode in Settings.
Note:
The Bluetooth network only supports to be used by connecting to Android phones. To use the Bluetooth network, it is necessary to ensure that the watch's Bluetooth is connected to the phone normally and that the network connection of the phone is normal.