A. 1. Ensure compatibility: Verify that your watch is compatible with FlagFit 2.0. Check the app's documentation or website for compatibility information. 2. Restart both devices: Restart your phone and the watch to reset any connection issues. 3. Forget and re-pair the device: Go to Bluetooth settings, find your watch, select 'Forget', and then re-pair it.

B. 4. Check for updates: Ensure both the app and the watch firmware are updated to the latest versions.