You need to call T-Mobile customer support and provide them with your IMEI code.
You can get your IMEI code by typing *#06# in your keypad.
I would write it down before calling.
call customer care and see if the device is eligible to be unlocked, if it is they will give you a code to put in your phone and tell you the steps to unlock the phone from att's network. then your tmobile sim will work in it.
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The safest way to unlock Samsung Jet is through unlock code. You can get the unlock code at - http://eunlock.net/?page_id=7#
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You can get an unlock code for your Motorola V360 mobile phone from the network lock by using an unlock code.You can get this code from Theunlockarena.com at reasonable price.
What is the unlock code for midnightpool 2 Samsung C 5212
HOW DO I UNLOCK MY SAMSUNG OMNIA II SCH-I920 V IT HAS A UNLOCK CODE ON IT AND I DO NOT REMEMBER THE CODE PLEASE HELP
Every chip has a different PUK code. You will need to call customer service
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the unlock code is 42*60914772 the unlock code is 42*60914772
Every phone needs unique unlock code which are generate using IMEI#. No one can tell you unlock code for T-Mobile myTouch 3G unlock code. You can get from paid service : http://htcimeiunlockcodes.com
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