Gevey Ultra S is a Sim hack tool developed by Chinese hacker team called Gevey when iPhone developers team was unable to produce UltraS Unlock for iPhone 4S (5.0, 5.0.1) Baseband 1.0.13, 1.0.14, 1.0.11 without Jailbreak.
The Ultra S Sim Hack provides two different manual ways to unlock your iPhone 4S and included a Gevey Sim Tray, Gevey Ultra Sim and MicroSim Sticker Guide, which have to be inserted into the Sim Card tray along with the actual SIM card that you want to use in your iPhone 4 S.
Then you have to follow a short procedure written on sticker guide i.e. Dialing an emergency number, hanging up, then toggling flight mode on and off a few times and your sim card service provider screen will magically appears. You can watch this Gevey Ultra S video, showing you how simply this work.
Gevey Turbo Sim as they call it is actually not a sim. It is a sim interposer / sim jacket, an electrical interface which directs the connection from 1 socket to another socket. The purpose of a sim interposer in this case is tore-route a connectionto a different connection which can then unlock the iphone 4S. Gevey Sim Interposer is an integrated circuit which contains the unlock exploit using emergency number dialing 112.