a friend of mine has AT&T iPhone plan, on an iPhone bought in June he wants to give that phone to his g/f since that one can be unlocked . If he buys a new iPhone can he put his AT&T sim in it and will it work fine remember he has a legit iPhone plan he basically just wants to switch phones and unlock the old one can it be done thanx guys!! Btw hope there is an unlock for bootloader 4.6 soon!!!!!