now everything is working fine except the calling feature, phone is fast as well but when i try to make a call it says not registered on network. which was working fine before, similarly to another S3 I9300 of a friend the same ROM is installed and it works fine without any problem at all. even calling is working fine.
The error message is "Not Registered on Network "
what can i do to recover my phone? can i unroot it ? if so please appreciate any help on how to do it. what could be the issue here if anyone have a idea.
Thanks in advance.