Unlocking Instructions for T-Mobile MyTouch 4G

How to Unlock T-Mobile myTouch 4G:
Insert a not accepted SIM Card and turn ON your T-Mobile MyTouch
4G.
A dialogue screen will prompt you to enter the Unlock CODE.
The box will say:
Title: Special Code Required
Dialog: Enter Code to enable SIM
Box for Code: 1-8 digits
Options: Enable or Cancel
In the upper right corner, the SIM is flashing where the signal
strength should be. On entering the Unlock CODE, a dialog box
comes up saying "Authenticating Code".
In case you see the "Waiting for Activation Screen", hit the Menu
key and the letter L key at the same time. The menu key is the top
left key. By doing this, the waiting screen will go away and you
will be able to make calls. For best results, hold down Menu and
the L key until the Waiting for Activation screen disappears.
Your T-Mobile MyTouch 4G is now unlocked!
OR
Insert a not accepted SIM Card and turn ON your T-Mobile MyTouch
4G.
Your T-Mobile MyTouch 4G will prompt for Unlock CODE.
Enter UNLOCK CODE provided by UnlockToTalk.com.
Your T-Mobile MyTouch 4G is now unlocked!