Install Gevey sim in 10 steps

First you need to confirm your gevey turbo sim card is an genuine one Eg: check the behind the manual mini book and the website must be applenberry.com not appleandberry.com
if its appleandberry.com i can't recommend you to follow these introductions, remember this gevey sim work for any baseband and any 4.x iso before the proceed make sure to turn off your flight mode

1.ok now first you need to cut your sim card correctly match to the gevey sim card size

2.after that place your sim card on gevey sim card

3.put it to your phone (before you insert the sim phone must be fully off)

4.now turn on your device

5.don't do anything before you get the accept window

6.accept the massage from gevey sim (it has to be no service)

7.wait for 1 signal bar

8.after the 1 signal bar dial 112 and quickly end the call (don't wait any second)

9.go to settings and turn on the flight mode on and wait 15 seconds and you will get a error massage like "no sim card installed" :D

10.turn back off flight mode and you will get a massage sim failure ok now you done wait for sec and you can see your carrier name tadhaaa!!!

HAVE FUN WITH YOUR UNLOCKED iPhone :D

keep in your mind this is an tethered solution for unlock your iPhone
if you restart the phone you have to do these steps again and again

video: http://www.youtube.com/watch?v=EiTXCx5WhMM