Has your IMEI been blacklisted because it was reported stolen by you?
If not ~
There are a number of other different ways your phone can become blocked as well. Here's what to do.
Have you entered the wrong PIN code several times?Your SIM card will block itself and ask for your PUK code. You can find your PUK code in your SIM card wallet.
Don't have your SIM card wallet? If you've already signed up for MyT-Mobile, you can easily access your PUK code online. Here's how.Step 1)
Sign up or log in to My T-MobileStep 2)
Select PhoneStep 3)
(If there's more than one mobile on youraccount, click on the mobile number you wish to find out the PUK for -if there's only one mobile on your account, go straight to step 4)Step 4)
Select Unblock SIMStep 5)
Click beside If your PIN code is lockedStep 6)
Your PUK code will display. Enter this into your phone to unblock your SIMTip:
If you enter the wrong PIN 10 or more times,this will LOCK your SIM card and you will need to replace it. To ordera replacement SIM card call T mobile at 0845 412 5000
(Charged at local toll rates) or if you have access to another T-Mobile phone, simply dial 150