How to Unlock your iPhone 3G, 3Gs, 4, 4s with SAM

The Apple server are closed ! time is over ! It dose not work any more
What do you need: A jailbroken iPhone that can be activated in iTunes (that is, not officially blacklisted), a computer with the latest iTunes installed and working internet connection. You will also need to know the carrier that your iPhone is locked to.This will unlock all basebands like 4.11.08 , 4.12.01 ,1.0.13 ,1.0.14,2.0.10

First for jailbreak Your Device Follow Below Links :
Redsn0w 0.9.10b7 – Jailbreak iOS 5.0.1 Untethered All Devices & iOS 5.1 Tethered non-A5 Devices
1. Install Sam Bingner’s SAM (Subscriber Artificial Module) package. I recommend that you get it from “http://repo.bingner.com” since older versions have a different interface and may not work for this purpose.
2. Enter SAM by either going through the settings menu or find the SAMPrefs icon on your springboard. You will need to have the SIM card you intend to use in your phone.
3. Go to utilities and select “De-Activate iPhone”
4. With SAM enabled, choose “By Country and Carrier” in “Method”; find your carrier, for some carriers operating more than one Carrier ID you may need to select “SIM ID”; easy to tell since iTunes will not activate if the wrong IMSI is selected.
5. Connect your phone to iTunes your iPhone will be active. Then close iTunes
6. Go to More Information Then tap “Spoof Real SIM to SAM”.
7. Disable SAM
8. Connect your iPhone to your computer and open iTunes You should get an error saying that your phone cannot be activated. This is normal. Just close iTunes and open it again
9. You should see signal bars in a short time, congratulations.
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.
Since it does not involve emergency numbers or IMSI spoofing it will not have any of the issues associated with SIM interposers. Tested working on iOS 5.0.1 but should work with tethered 5.1 too.
Video Tutorial : How to Unlock your iPhone 3G, 3Gs, 4, 4s with SAM
FAQ :
Q.1: I don’t have ” De-Activate iPhone ” ?
A.1 :Insert SIM
Run SAM
Go to Utilitie
Press Revert Lockdownd to Stock
Then Attempt Avtivation then Follow Video Tutorial
Q.2:  in ” More Information ” on filed of  ” ActivationState ” see ” FactoryActivated ”
A.2: Go to Utilitie
Press De-Activate iPhone (clear push)
Press Revert Lockdownd to Stock
Then Attempt Avtivation then Follow Video Tutorial
Q.3: why i can’t see ” Spoof Real SIM to Sam ” ?
A.3: Go to Utilitie
Press De-Activate iPhone (clear push)
Press Revert Lockdownd to Stock
Then Attempt Avtivation then Follow Video Tutorial
Select your Carrier info then go to ” Utilities ” and Conncet your device to iTunes & wait until ” ActivationState ” set to ” WidecardActivated ” then Disconnect your Device and Press ” Spoof Real SIM to Sam ” & Go back to main menu and Turn off ” Enable ” Button, Connect your Device to iTunes & wait until get failed error, Disconnect and Reconnect to iTunes, You should see signal bars in a short time, congratulations.
Q.4: Do i need the original sim card that the iphone is locked to to ?
A.4 : No you don’t
Q.5:How do i know which carrier my iphone is locked to?
A.5: Search your part number you will  found out
Q.6: “”The Sim card inserted in this iPhone does not appear to be supported” ” what this error means ?
A.6: It means you don’t select your carrier right , if you sure its right deactive and try again
Q.7: “invalid Sim card” what can I do?
A.7 : Just sure the hacktive is ON  then reboot your iPhone and try again