In the US, network reliability and compatibility varies tremendously from state to state. What works fine in one place may not in another.
If you face problems with our AT&T SIM's, you may need to add a new a configuration setting.
1. Go to Settings -> Mobile Network -> VoLTE -> VoLTE config -> New. Enter 310030 and click 'Save'.
After you've added this, double check that you are using the correct APN too.
2. Go to Settings -> Mobile Network -> APN and select 'broadband'.
3. Return to the main settings menu and select Reboot to restart your watch.
If issues persist, please contact us at email@example.com