http://www.besttechinfo.com/permanently-unlock-iphone-4-gevey-ultra-sim/

How To Permanently Unlock Your iPhone 4 With GEVEY Ultra SIM

GEVEY Ultra is a new sim that allows you to use your GSM iPhone 4 on any GSM carrier and it no longer requires you to dial the 112 emergency number! This method is compatible with iOS 4 – iOS 5 and here's how to do it on your Jailbroken iPhone: Step 1: Cut your SIM card to fit the tray, the GEVEY package should come with a SIM cutter – remember, DON'T cut into the circuitry! Step 2: Open Cydia and add the following source: cydia.furiousmod.com. Install the "FuriousMod" from that source. After its finished installing, you'll get a "No SIM card installed" error – it's fine, just power off your iPhone. Step 3: Open the SIM tray (with a paperclip) if it isn't open already and then place the GEVEY SIM in the tray, along with your carrier's SIM on TOP of the GEVEY SIM. Once BOTH SIMS are in the tray, insert it back into your iPhone. Step 4: Turn your phone back on and wait around 40 seconds for your signal to register – make sure you IGNORE any errors and don't even interact with your iPhone until it picks up a signal. Step 5: You'll now have service –

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