O2

I have an Apple Watch Ultra with a sync-1 Airtime Plan. However, regullary the watch will fail to go to cellular when away from the watch. The only solution is to restart the Watch, then things work (mostly) for maybe a day or sometimes 3 or 4 days. ...

I have just purchased an Apple Watch Ultra directly from Apple as a replacement for my Apple Watch Series 6.I have set everything up with no issues except for the Mobile Service. I have had the cellular version of the watch ever since O2 enabled it w...