If you do not want to deal with messy jailbreaks, and simply want to unlock your iPhone 4 to be able to use on any network across the globe, this new hack might be for you. Gevey, a SIM cards manufacturer, recently released a little piece of hardware designed to unlock your iPhone 4.
The hack is a bit involving, as it requires the user to swap the SIM tray that comes with the iPhone 4 with Gevey’s SIM tray, make a few calls, and switch the phone over to Airplane Mode a couple of times, but once done, the phone will be carrier unlocked once and for all – until the next iOS update.
The device, simply called Gevey SIM, works with all flavors of iOS 4, including iOS 4.3. Note that your device must be using one of the following basebands:
Gevey SIM, is available about $75.