Genuine iOS 5.1 Gevey Ultra S Turbo Sim Unlocked For GSM iPhone 4 S 4S 4GS 5.0, 5.1.1
Will Not Void Your Warranty!
Works on the following iOS (version) and Baseband (firmware).
iOS (version): 5.0, 5.0.1, 5.1
Baseband (firmware): 1.0.11, 1.013, 1.0.14, 2.0.10
Turn off the phone
Insert the Gevey Ultra S with the activated sim card you want to use
Turn on the phone
Wait 2 minutes and you should have a signal