Just one day after the paid unlocking software iPhoneSIMfree was released, a completely free software called iUnlock, which can also fully unlock the iPhone, has been released. This software comes from the iPhone Dev Team, a group that has been dedicated to unlocking the iPhone since its launch. It is claimed that the unlocking principle of this software is similar to that of iPhoneSIMfree, both exploiting a vulnerability in the iPhone operating system. However, the iUnlock software is very ingenious, with a capacity of less than 7KB. Currently, some websites have confirmed that the software is genuine and effective.