I have had a friend give me a phone from China. This was already running CM10 when I got it and was the international version of the SIII . I have a work iPhone and took the ATT SIM out and placed it in it. I understand I cannot get LTE connection with this device... but the SIM did not appear to be recognized. I looked and there does not appear to be any unlock process for this phone with this software and I did not believe it was SIM locked as the owner told me he slapped regional SIMs in it when he traveled.
Does this imply hardware failure or am I missing something stupid here?