Gevey SIM is really a great invention for jailbreaking community. It can magically unlocks any GSM iPhone 4 running iOS 4.3 on all current basebands. You can buy this amazing Gevey SIM for 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!
Here is an introductory note about Gevey SIM and its astonishing iPhone 4 unlock abilty from the official site:
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:
If you have made your mind to get it, you can visit official site for Gevey SIM to buy it for $70.
You can read more about Gevey sim in this article.
If you want to know how it works you can read the two post that is given below,
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