How to unlock sim card for my,my touch tmobile

If it unlocked then how it got locked. with which sim card your mobile locked at&t or tmobile. You said you have unlocked mobile does it roaming lock or sim locked. it may possible that your mobile was temporary unlocked on the basis of roaming otherwise your mobile is sim locked.
To unlock your at&t or tmobile smartphone you need to generate unlock code from imei number of your mobile phone. it will generate four kind of unlock code. if your mobile is hard locked then use defreeze code otherwise use nck code. here is how to unlock at&t sim for lg samsung nokia mobile at united states of america , canada and uk.

Hi i think your mobile is locked by particular provider. So only it didn't accept your t-mobile sim card. If you need unlock your mobile you can visit this site Theunlockarena.com here you can get the code and unlock your mobile easily. To get the code you have to mentioned which country is locked now,network provider and imei number. Then they send unlock code through email . After unlock your mobile you can easily use t-mobile sim card and any other sim card in your mobile.
Theunlockarena.com

Hi i think your Samsung c3300k mobile is locked to some other network provider due to this it wont accept your sim card .To solve this you must unlock it .Code are the best solution to unlock it .To purchase code visit Mobile-unlocker.com here they ask you the network name to which your mobile is locked and the IMEI number of your mobile .Then at last they deliver you code to unlock your mobile .Once your mobile is unlocked then it will be free to all network sim in it.

hi codes are the simplest way to unlock your samsung t539 mobile from at&t network .to get codes visit simpleunlocking.com here they provide codes for all GSM mobile models .

PUK stands for Personal Unblocking Key. This is a uniqueeight-digit code specific to your SIM card. This is required when the PINnumber to unlock your mobile phone is entered incorrectly 3 times. You are thengiven 10 attempts to enter your PUK code. If an incorrect PUK code is enteredafter the 10th attempt, you will block your SIM card permanently and willrequire a new SIM card from your mobile phone provider.
PUK codes can be obtained through the following ways -The PUK code is in your SIM card documentation Starter Pack.If you do not have this then -Please contact your phone service provider.
Your cell phone service provider can give you the PUK code once you give themyour account details and they have confirmed your identity.For details to obtain the PUK code for the SIM card, pleaseclick on this link and follow my instructions.
http://www.fixya.com/support/r5705889-puk_code

Important: Stop if you receive an error message. The device may lock permanently if you enter the incorrect code multiple times.

1. See if your phone is eligible to unlock: Mobile Wireless Device Unlocking.
2. Contact Customer Care to request the Mobile Device Unlock code for your phone.
3. Verify the IMEI by typing *#06#.
4. Insert a Non-T-Mobile SIM & turn the phone on.
5. The phone will automatically prompt you to enter the code into an empty field.
6. Click/Tap in the empty field above the "Unlock & Dismiss" options (this will display a key pad on the screen).
7. Input the unlock code provided by T-Mobile.
8. Click/Tap Unlock.
9. The phone will display Network Unlock Successful.

You can purchase an unlocked code for the tmobile vairy on ebay. take a look at this link http://shop.ebay.com/i.html?_nkw=vairy+touch+unlock+code&_sacat=0&_dmpt=PDA_Accessories&_odkw=tmobile+6303+unlock+code&_osacat=0&bkBtn=&_trksid=p3286.m270.l1313

under the modem has reset button. push or drag that button you can unlock the modem.
try it.,. enjoy.,,

You can never be successful, if the SIM is locked with a pin & you forgot it.

To get your IMEI no your mobile you need to use the following code *#06# This will display the IMEI number of your mobile
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How to Unlock Samsung T619:
What you need to start is your Samsung T619 and a NON TMobile sim card. You can borrow a friend’s if you need one.

1 - Power the phone off
2. Remove the TMobile sim card
3. Insert the NON-TMobile sim card and replace the battery.
4- Turn on the phone, “wrong sim” should appear on the screen.
5-Dial *2767*3855# and wait. It could take the phone a few seconds to reboot. The phone will reboot,and the non T-Mobile SIM card in the phone will work,but this is only a TEMPORARY unlock step
6-Dial <span>*7465625*638*00000000*00000000# phone will say it is personalized.
7-Dial #7465625*638*00000000# The phone is now unlocked permanently.
8-Dial *#7465625# to check the lock status.