Unlock iPhone 4S running on iOS 5.x on AT&T to T-Mobile with no hardware or software required

When it comes to factory unlock smart phones, iPhone is probably the most annoying device. Almost every day a new developer or hacker is working to exploit the software to get a carrier unlock.

Fortunately, an iOS 5.x bug has been discovered by Michael Capozzi who claims to have a working method which can unlock an iPhone running on AT&T to T-Mobile. Since T-Mobile doesn’t have 3Gservice on iPhone, you will only be able to use Edge service. Further more, you will need a T-Mobile sim with data package on it for the unlock, if you will try to unlock your iPhone on a Wi-Fi instead of T-Mobile data plan the unlock will fail. You will also need to make sure that you will need to cut the T-Mobile sim and make it a microSIM. If you can’t be asked to cut the sim, you can simply purchase a microSIM for T-Mobile official website.

You can simply follow the easy steps available below to unlock your iPhone 4S running on iOS 5.x, for better understanding you can also watch the available video made by Capozzi or by the folks at iDevice after the break.

 

iPhone-4S

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!


No related posts.