Unlocking tends to be a little bit trickier than jailbreaking, for obvious reasons. It usually involves some sort of software hack, using a PC/Mac-side application like Ultrasn0w. Unlockers have a new option available to them every time. A SIM card hack called Gevey that unlocks iPhone 4 devices running anything up to and including the latest iOS 4.3 update.
$70 hack (tax/shipping) offers a hardware-based unlock and . it is available through applenberry . You can simply place the SIM- card into your iPhone’s SIM tray alongside your actual SIM card and the Gevey handles the rest. It sounds magically delicious if you fancy an iPhone unlock.
To make the Gevey work its unlock juju you have to turn on your phone and cycle in and out of Airplane Mode a few times. you get what looks like an incoming call accept It and you’re sent straight back to your phone’s settings page. Once you have finished, the unlock should work… unless your phone runs out of batteries or needs to be reset, in which case you need to repeat the process all over again.
You will find that software-based unlocks are free, and they require some diligence and know-how on the user’s side, they have proven to be reasonably reliable. Gevey costs quite a bit more than “free,” and it requires you to repeat the unlocking process with some regularity. it does offer an iOS 4.3 unlock, which is something that software-based solutions haven’t yet tackled. You can bet that they will in time, but if you absolutely have to unlock your newly updated iPhone 4 right now, you’ll have to be willing to pay for it.