Unlock iPhone 4with Gevey Ultra SIM

Gevey Ultra Sims are nothing new, but i decided to try it to see if it really works. I got mines from http://applenberry.com/store/gevey-sim/gevey-ultra.html. Shipping was super fast and most importly it came.


ApplenBerry is a authorized re-seller BEWARE OF OTHER SITES, they may or may not be real Gevey.


Gevey will work on firmware 4.3.4 and 4.3.5 but you have to do the steps manually or for a non-jailbroken devices.


Instructions
Jailbroken Devices

1. Open Cydia
2. Click on Manage then Sources
3. Click Edit then Add
4. Type "http://cydia.furiousmod.com "
5. After it is done click 'Return to Cydia'
6. Then click on FuriosMod.com
7. Install FuriousMod 
8. Confirm It and Respring your iPhone
9. Turn off your iPhone and put in your Gevey SIM Card
10. Turn on your iPhone and wait for your carrier name to load.

If you ever remove the SIM card while it is on, you must turn the iPhone off again to have the unlock.
If you are having problems I suggest you try unlocking the iPhone manually which is the Non-Jailbroken Device's way.


Non-Jailbroken Devices

1. Turn off your iPhone, if it is on.
2. Insert your SIM card with Gevey SIM card.
3. A Welcome Menu should show up, accept it. (it did not show up for me so its okay to skip this)
4. Click on Settings
5. Click on Phone
6. Scroll down, click SIM Applications
7. Click on Instructions
8. Accept and wait 15 seconds
9. When you have one bar dial 112 and press end immediately not letting the call go through.
10. Turn on Airplane Mode and wait 40 seconds
11. You will see "No SIM card installed", turn off Airplane Mode
12. "SIM Failure" should appear click OK and wait for your carrier name to appear. 
13. Enjoy Your tether unlocked iPhone

It is important in step 8 to wait, and step 9 to wait for a signal bar.

It might take you more than one try to get all the steps right .

Official Instructions can be found at http://applenberry.com/store/instructions/gevey-ultra-1/manual.html
I recently updated an iPhone 4 to GM ios 5 which also updates the baseband to 4.11.01, Gevey did not work so stick with 4.3.5 or lower.
If you have shsh you can always downgrade.