T-Mobile TM1393 - Manual (Page 18)

Section 1, page 14
Introducing Your T-Mobile Subscriber Identity Module (SIM) Card
The SIM card contains a computer chip that identifies you to the wireless network
and contains information such as your phone number, service and registration
information, and contact information, as well as the memory to store speed dial
numbers and text messages that you receive.
Introducing Your Personal Identification Number (PIN)
Your SIM card comes configured with a PIN to lock it against unauthorized use.
The default PIN code is 1234. Type this default code when your device prompts
you. You can create your own PIN when you activate your SIM card.
You have up to three attempts to type the correct PIN and unlock your SIM card. If
you fail to do so, your SIM card will be locked, and you will need to call Customer
Care at
1-800-937-8997 for a code to unlock your SIM card and reset your PIN.
Activating Service
If your service has not been activated, then follow the steps in this section to
activate.
The T-Mobile Activations representative will set up your service and assign your
mobile number. It takes about 20 minutes to activate voice service and may take up
to 24 hours to activate data service. Business and government accounts may take
additional time to activate voice and data service.
By activating service, you acknowledge that you have read and agreed to the
Terms and Conditions of the Service Agreement.