How to Unlock Your iPhone 4S, 4, and 3GS [No Hardware Required]

Life was much simpler in the early iPhone era with UltraSnow there to unlock your iPhone, but now you have to wait for your carrier to unlock the device. However, there seems to be a way to unlock your iPhone that doesn’t require any hardware or software mods, including jailbreak. Interesting news guys, though, we have to caution you that we have not personally tried this method. So, we`re unclear of its functionality. If you`re still interested, bear with us.

Redsn0w’s Note: The method has been reported to be working on iPhone 4 and iPhone 3GS too. It should work on iOS 5 only, iOS 5.0.1 is not supported.

It`s worth noting, this method locks only AT&T devices:
1. Insert original carrier AT&T SIM card
2. Dial 611 for AT&T customer service hotline and drop the call
3. Turn on Airplane Mode
4. Take out AT&T SIM card
5. Insert T-Mobile SIM card
6. Make sure WiFi is off ( also tap on “Forget this Network” to make sure it doesn’t connect automatically later)
7. Switch off Airplane Mode and iPhone will search for network. This is followed by the Apple splash screen appearing.
8. Activation Required will be displayed on the screen
9. EDGE network will activate automatically – notice the “E” on the top left corner of the screen
10. Wait for about 20-30 seconds and turn off the phone
11. Turn on iPhone and the same Activation Required screen will be displayed
12. When you see one signal bar, tap on Use Cellular Connection
13. Eject SIM card
14. Activation Required screen will be displayed the second time
15. Insert SIM card
16. Unlocked!

Let us know if it works out for you.

Videos showing the method in action: