Apple Watch Ultra 2 ‘Error 15’ message

[PapaTango]

Good evening, 

I have had my ultra for 4 months now, and have been unable to connect it to cellular. 

I’ve spoken to tech support (turn on/turn off, uninstall/reinstall etc etc) but no joy. 

can anyone on here assist please? 

[pgn · Accepted solution]

@PapaTango - Activate Apple Watch Guide has the best info we know of - and the ways to contact O2 via X or Messenger as well - in here also, about half way down the page: Guide: How to find help & contact O2 

Good luck.

[MI5]

@PapaTango 

All we know with how to escalate is here Activate Apple Watch Guide