There is such a overwhelmingly large demand for unlocked iPhones that college kids and repair shops make serious money buying, fixing and unlocking iPhones. Just check your local craigslist. It now appears that AT&T will help out this trend by unlocking your old iPhones. They announced a couple days ago that they would begin doing it as early as Sunday. (When I first heard this I thought it was crazy, I just can’t wrap my head around the idea as to why AT&T would want to make it possible for other people to use T-Mobile)
So if you have an old iPhone and want to unlock it for whatever reason than here’s how to do it.
Step 1: On your iPhone, open Settings > General > About, and note down you IMEI number.
Step 2: Log into AT&T’s website, and proceed to AT&T’s WirelessSupport Chat.
Step 3: Give them your IMEI (Step 1)
Step 4: Within 72 hours, you’ll be sent an e-mail notification stating your unlock is ready.
Step 5: Finally, you’ll need to follow the remaining instructions in the e-mail, which consist of syncing and restoring to complete the process.