Unlocking the various iPhone models has always been a nightmare for many developers and software experts so it would make sense that the iPhone 4S would follow suit. Oddly enough though a group of researchers working on unlocking the iPhone 4S found that there is actually a way to unlock the phone without any hardware or software changes whatsoever.
This is great news for thousands of U.S. based users that are hoping to purchase an iPhone 4S to use on a network other than AT&T. With just a little bit of work it is incredibly easy to unlock the iPhone 4S to work on a network like T-Mobile. The process is simple, there is no jailbreaking or hacking involved, and best of all, it works. If you want an unlocked iPhone 4S then definitely give it a try, it even works on the iPhone 4 and iPhone 3GS too!