Apple Watch Mobile Plan errors 08 and 15

[JB18PA]

Hi,

I've been trying for a week now to add a mobile plan to my Apple Watch series 9. I've gone round and around with O2 support telling me I haven't bought a plan. I get the following errors after I tap 'Set Up Mobile Service' in the watch app on my iPhone:

"Oops, something went wrong. Try again and if the problem continues call 202 for free from your O2 mobile, quoting reference code 15"

or

"We're setting up you Apple Watch on the O2 network and we'll text you when it's all done. If you don't receive a text within 24 hours, call 202 for free from your O2 mobile, quoting reference code 08"

I've tried unpairing and resetting the watch, but then get the same errors.

Any suggestions welcome!

[madasaf1sh · Accepted solution]

@JB18PA 

Have a look at this guide, which also sign posts you to the correct support channel Activate Apple Watch Guide