Activation Required screen will be displayed the second time.

When you see one signal bar, tap on Use Cellular Connection.

Turn on iPhone and the same Activation Required screen will be displayed.

Wait for about 20-30 seconds and turn off the phone.

EDGE network will activate automatically-notice the 'E' on the top left corner of the screen.

Activation Required will be displayed on the screen.

This is followed by the Apple splash screen appearing.

Switch off Airplane mode and the iPhone will search for the network.

Make sure Wi-Fi is off (also tap on 'Forget this Network' to make sure it doesn't connect automatically later).

Dial 611 for AT&T customer service hotline and drop the call.

If you are attempting this and have already set up your iPhone 4S, you should definitely make a backup of all your data and settings before continuing.

That being said, T-Mobile has been extremely iPhone user-friendly in the past, even offering official help pages on its Web site. As with any unauthorized cellular usage, charges incurred cannot be predicted. Now, according to a developer's post on Pastebin, users can unlock their iPhone 4S for use with any network, without any software or hardware hacks.īefore we get started, this is one of those workarounds that should be done with caution. If you're suffering from iPhone 4S envy, chances are you're stuck in a contract on a non-iPhone network such as T-Mobile.

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