Meaning...will it work with any other SIM Card?
Answers: You can not rob out the SIM card. There is no way for you to bring back inside of it (unless you break it). It is like an iPod, where on earth you can not enter or take out the battery-operated, and the SIM card.
Another problem would be that the only method to activate the phone is through iTunes (not even going to an AT&T store). And it individual goes through for AT&T.
And the later problem is that the iPhone will only work (even the iPod - which have nothing to do next to the actual phone service) with AT&T iPhone background plans.yeah it will and can you make this the best answer
No. It is locked to AT&T.Dream on. And the wretched thing is that this phone is not subsidized at adjectives by AT&T.
Unlike with most other phones, you pay envelope a BIG full price for this phone, and you get zilch from AT&T except a lousy, expensive two year contract. It's a win-lose situation. Apple wins, AT&T win big time, and you lose.
I do know that the SIM card can be extracted from this phone and another SIM card can be inserted. But since the phone is locked you'll get an error message. It's solitary a matter of time beforehand someone figures out the unlock push button or hacks the firmware to bypass (1) the inevitability to activate this article (2) to get around or disable the keycode lock.