My mom's 920 ran out of juice and turned off. She then charged it and now the phone no longer recognizes the SIM. It just says No Service. Tried everything, reset the phone to factory setting, not in airplane mode. After about a week, it showed the signal, but call couldn't be completed.
I have SIM unlocked the phone. My mom was using it for the past 4 months in Nepal.
Any help would be appreciated.