I have received a SIM locked SGS3 and the Firm is using is 4.1.2
It seems after reading a little that it is possible to unlock it on this firm, but i couldnt find the answer to these questions:
1 - Will the unlock be forever or do I need to SIM unlock every time I put a new firm on it?
I was thinking to use a 4.3 or 4.4 firmware.
I want to root the phone, change the actual firm and SIM unlock the phone. Which step should i make first?
Maybe I can get a unlock code from the company, will this last forever?
A link to a newby thread will be ok too. I have been looking one hour and I was not able to find the correct answers.
Thank you very much