My iPhone 6 - 64Gb was working fine everywhere for about 6 months, I updated to IOS 9.2.1 one day and "no service/searching" message appeared on screen and I can not use it to make or receive phone calls.
I have done:
- Restored to factory condition with IOS 9.2.1
- I replaced the SIM card with a new one
- I restored network configuration
- Upgraded to IOS 9.3
- I read a lot of the same problem on internet "no Apple response", "No help at all for this issue"
When the iPhone was restored with IOS 9.2.1 the phone was working fine about 15 minutes. ("no service/searching" message appeared again).
When I erased some applications with IOS 9.2.1 the phone was working fine about 15 minutes. ("no service/searching" message appeared again).
When I upgraded to IOS 9.3 the phone was working fine about 15 minutes. ("no service/searching" message appeared again).
Running out of ideas...
Any help to resolve my problem please?
Thank you in advance