[Q] SIM card not found after unrooting - what to do?
My friend has Samsung S3 Galaxy (i9305). He tried to root (don't know which ROM he chose or which guide he used to perform the task). Something went wrong and he unrooted. But now the SIM is not found anymore. The phone boots anyway. Network is also not found and no emergency calls can be made. The phone also locks up every now and then.
What should he do to restore the phone to it's original state? Which guide should he follow?
I can provide more info if needed.