A new hardware hack has recently been released in the form of a SIM called Gevey that magically unlocks any GSM iPhone 4 running iOS 4.3 on all current basebands. Unlike ultrasn0w software unlock solution which costs nothing at all, Gevey SIM comes at a hefty price of $70. However, this is the only unlock solution available at the moment and surprisingly, it doesn’t even need a jailbroken iPhone 4 to work!
The hack involves a wafer thing SIM, that needs to be inserted in the SIM card tray along with the actual SIM card that you wish to use in your iPhone 4. You then have to follow a short procedure of dialling an emergency number, hanging up, then toggling flight mode on and off a few times. Then service with your chosen provider magically appears. It is a little convoluted and has to be repeated if you reset your iPhone 4 or run out of battery.
Gevey SIM currently supports any GSM iPhone 4 running iOS firmwares 4.0, 4.1, 4.2, 4.2.1 or 4.3 and supports the following basebands:
You can buy yourself one of these Gevey SIMs here, though we DO NOT recommend this solution as its legality is still in question. Here is a video of Gevey SIM in action: