I currently have an iPhone that is under AT&T. I want to stay with AT&T. I don't want to move to T-mobile, Sprint, Verizon, or anything else. I want to unlock it, just in case I'd want to use it overseas with another SIM card. If I were to unlock it on my own, would AT&T charge me anything? Would I automatically be kicked out of my contract and be forced to pay a termination fee of any sort? I don't plan on manually calling AT&T to end the contract, because I still want to stay with AT&T.
>>> What does unlocking the iPhone do? Will I get in trouble for it?