A lot of time of has passed since iPhone 4S was released by Apple. Till now many users are anxiously waiting for an unlock solution for the iPhone 4S for example in the form of Ultrasn0w a popular software unlock tool that can be installed on jailbroken iPhones to unlock the device. We are not sure that how much time it will still take for such a tool to be available for the iPhone 4S. But luckily for us there are indeed some clever people out there that managed to unlock the iPhone 4S without using any jailbreak and posted the method online! This method is based on software flaws in iOS 5 and recently has also been confirmed to work not only for the iPhone 4S but also iPhone 4 and iPhone 3GS! So, if you happen to have any of these devices than you can try your luck with the procedure mentioned below to unlock your iDevice:
Insert original carrier AT&T SIM card
Dial 611 for AT&T customer service hotline and drop the call
Turn on Airplane Mode
Take out AT&T SIM card
Insert T-Mobile SIM card
Make sure WiFi is off ( also tap on ‘Forget this Network” to make sure it doesn’t connect automatically later)
Switch off Airplane Mode and iPhone will search for network. This is followed by the Apple splash screen appearing.
Activation Required will be displayed on the screen
EDGE network will activate automatically – notice the ‘E’ on the top left corner of the screen
Wait for about 20-30 seconds and turn off the phone
Turn on iPhone and the same Activation Required screen will be displayed
When you see one signal bar, tap on Use Cellular Connection
Eject SIM card
Activation Required screen will be displayed the second time
Insert SIM card
You might also want to have a look at our recent article: Jailbreak iOS 5.0.1 Using Redsn0w on Windows & Mac For iPhone, iPad, iPod Touch [Guide].
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