Looks like the iPhoneSimFree group, who claimed to have hacked the iPhone a week ago, isn't hampered by the same legal dilemma as UniquePhones. The company has developed a software-only unlocker for the iPhone which they will be releasing within the next 48 hours.

To satisfy doubters, iPhoneSimFree is also holding a contest where three winners can have their iPhones unlocked for free. No definite price has been announced yet but they will be offering as many payment options as possible. They are confident that it will do its job but they don't offer a money back guarantee if Apple chooses to lock the device again in the future.

They claim that the only difference between pre- and post-unlocking the iPhone would be the Visual Voice Mail which is an exclusive feature of AT&T. Whether or not AT&T will be able to delay or entirely halt the operation before its release like it did for UniquePhone's unlocking software is still in question. Most likely we'll hear about it within the next 48 hours.