on 19-05-2020 12:04
No service on my iPhone, says mobile data update required to use mobile
Have connected to iTunes to try and resolve but still nothing....
on 19-05-2020 12:07
on 19-05-2020 12:11
on 19-05-2020 12:11
Check for network faults O2 Service Status
and try help here Guide: How can I sort out my network issues?
on 21-05-2020 16:50
on 21-05-2020 16:58
on 21-05-2020 16:58
Still no service on the phone
on 21-05-2020 18:50
on 21-05-2020 18:50
on 22-05-2020 06:42
on 22-05-2020 07:12
on 22-05-2020 07:12
I'd back it up to iTunes and then reset the entire phone and see if that fixes it.
If not it must be an account issue so you'll need to get customer service to check Guide: Coronavirus Community Help and Support