Why your local iPhone/iPad dealer of course! Not only does the fine country of Taiwan produce the majority of the world's electronics, but they can also protect you from the international calling wrath of AT&T. For a mere 15 US dollars, you too can have your iPhone unlocked so that you can use a local SIM card. Look how happy Monica is now that she can avoid international calling at $2.99/minute, $29.99 for data. This message is supported by I Hate AT&T.