I have an ATT GS3 that's eligible to be unlocked by ATT. (I want to use this phone overseas with a native SIM card when I travel.) ATT did send a code and instructions, but it never worked for whatever reason. It also says that if you try 5 times and fail, that the phone will be permanently locked to ATT. So far I've tried 4 times and am really nervous about trying the 5th time and failing. Does anyone know a more foolproof way to unlock? I have used online services before, and they worked, but now they seem to be charging a LOT of money. I have never rooted a phone before, but would that be a good idea if the 5th try fails to unlock the phone? Does that erase all of the ATT imposed restrictions, such as not allowing the phone to be used for tethering? Overseas, I'll have a card that should allow that. Thanks in advance.