on 02-08-2021 11:57
I am unable to make or receive calls and have 'no service' in t/l crner of screen. Texts, emails, messages are fine
What might be wrong
on 02-08-2021 13:48
A guess would be a SIM fault.
You can get a new sum in any O2 store.
Guide: How can I sort out my network issues?