Despite the best efforts of Apple and AT&T, it appears that the latest version of the iPhone has been unlocked via the same method as used on the original iPhone.
A Brazilian blog, TechGuru, posted the first report of it. Gizmodo checked it out, and said the method involves using a special SIM card adapter. It tricks the phone into thinking it's on an approved network.
"This method forges the International Mobile Subscriber Identity, making the phone believe it's working in the network in which it's supposed to work," Gizmodo writes.
If you speak Portuguese, please enjoy the video demonstrating the working unlocked phone below: