I can't use mobile data on my Apple Watch Series 10

On your phone: Press Watch.

On your phone: Press My Watch.

On your phone: Press Mobile Service.

On your phone: Press Set Up Mobile Service and follow the instructions on the screen to set up mobile data.

Press the Side button.

Press the mobile data icon to turn the function on or off.

Press the Digital Crown to return to the home screen.

Press the Digital Crown and the Side button and keep them both pressed until your Apple Watch restarts.

Press the Side button.

Press the airplane mode icon to turn the function on or off.

Press the Side button several times to return to the home screen.