Apple Watch Ultra

watchOS 9

watchOS 11 watchOS 9

I can't use mobile data on my Apple Watch Ultra watchOS 9

Cause 3 of 4: There's an error in the operating system on your Apple Watch

If mobile data doesn't work on your Apple Watch, it may help restarting it.

Step 1 of 2

Restart your Apple Watch

Press and hold the Digital Crown.

Step 2 of 2

Restart your Apple Watch

Simultaneously, press and hold the Side button until your Apple Watch is restarted.

Press and hold the Digital Crown.

Simultaneously, press and hold the Side button until your Apple Watch is restarted.