Google Pixel Watch 3
Android Wear OS
1 Find "Mobile"
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Connectivity.
Press Mobile.
2 Turn on mobile data
Press Mobile.
Press Automatic to turn on mobile data.
Press the confirm icon.
3 Set up mobile data
On your phone: Press Watch.
On your phone: Press Mobile network and follow the instructions on the screen to set up mobile data.