How To Unlock iPhone 4s

Hi Guys I Am Back With A Bang!
Today I Will Tell You How To Unlock iPhone 4s
This technique is very simple and useful, There's an Bug (glitch) in the latest iOS 5 Update which allows you to unlock your iPhone 4S.

Here are the simple steps which have been posted by folks at Macrumors that'll let you unlock your iPhone 4S (Only AT&T Network iPhone):

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 And Unlocked!

You can also see this video below for your ease:





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