I have an HTC Desire A8181...
Everything was working fine, until one day I turned off my unit then booted it back then it says "limited service"... I tried searching for network operators but the it will tell me "your sim card does not allow a connection to this network"...
here's what i have tried:
-resetting the unit to factory default
-rebooting the unit multiple times
-enabling/disabling airplane mode
-i have also tried downloading Anycut(app) - to view the phone info and to disable/enable radio
-tried changing network mode from WCDMA to GSM only
-turning the phone off and removing the battery for 30 mins.
but none of these worked, my phone is useless for a whole week now.