Unlock Your iPhone 4S, iPhone 4, iPhone 3GS Using SAM [5.0, 5.0.1, 5.1]

Here are instructions on how to unlock your iPhone using SAM. This method will work with the iPhone 4S, iPhone 4, iPhone 3GS, and iPhone 3G on any jailbreakable firmware including 5.x. to do this trick 1st of all you have to jailbreak your iphone and for jailbreak you can find instructions on how to do that using the Jailbreak Wizard.

Step One :                                                                                                   Tap to launch Cydia from your SpringBoard And Press to select Manage from the tabs at the bottom of the screen.

 

Step Two:                                                                                                   Press the large Sources button And Press the Edit button at the top right of the screen

 

Step Three
Press the Add button that appears at the top left of the screen And Enter http://repo.bingner.com and press the Add Source button.

 

Step Four
Press the large Return to Cydia button. And Press to select Bingner from the list of Sources.

 

Step Five
Choose SAM from the list of packages And Press the Install button at the top right of the screen.

 

Step Six

Press the Confirm button to begin installation.And Once installation has completed press the large Restart SpringBoard button.

 

Step Seven : 
Insert your new SIM card and tap to select SAMPrefs from your SpringBoard. And Tap Utilities

 

Step Eight : 
Press to select De-Activate iPhone. Your ActivationState under "More Information" should now be "Unactivated". If you don't have De-Activate iPhone you can use De-Activate iPhone (clear push).

 

 

Step Nine : 
With SAM enabled, tap Method and choose By Country and Carrier.

 

Step Ten : 
Tap Country and choose the country of your ORIGINAL SIM.

 

Step Eleven
Tap Carrier and choose your ORIGINAL carrier that your iPhone is locked to.

 

Step Twelve
For some carriers operating more than one Carrier ID you may need to select SIM ID. If you are unable to activate in Step Twenty Four then you have selected the wrong one.

 

Step Thirteen : 
Tap More Information and copy the IMSI under SAM Details to the clipboard.

 

Step Fourteen : 
Tap Spoof Real SIM to SAM

 

Step Fifteen : 
Go back to the main SAM screen and paste the IMSI number in your clipboard.

 

Step Twenty Four
Connect your iPhone to the computer and let iTunes reactivate your phone.

"Double click "Phone Number" parameter at the main device screen and make sure that the ICCID matches that of your SIM card." If not you need to start over from Step Fourteen."And Unplug your iPhone from the computer and close iTunes And Reopen SAMPrefs from your SpringBoard and disable it using the Enabled switch.

 

Step Twenty Seven
Connect your iPhone to the computer and launch iTunes again.

You should get an error saying that your phone cannot be activated. This is normal. Just close iTunes and open it again.

Step Twenty Eight
In a short time you should see signal bars. Congratulations!

   

Step Twenty Nine
You should now backup your iPhone unlock ticket in case this method is ever blocked. You can find instructions on how to backup the unlock ticket here.

IMPORTANT:
If push notifications stop after this process, you can restore then with the Clear Push utility in SAM, followed by connecting to iTunes. if this doesn’t work then restart your iphone once.

Your phone will work normally with your SIM card and that SIM card ONLY since we have tricked iTunes to think that ICCID is one of the intended carrier's. The phone can be rebooted and connected to iTunes freely without losing the "unlock", at least for now.
A big thanks to Loktar_Sun and Laforet for their contributions!

Source : http://www.iclarified.com