How to Activate a T-Mobile Prepaid SIM Card Onlineby Sam N. Austin
If you have a T-Mobile cell phone, you can use it with a T-Mobile prepaid SIM card even if you do not have a T-Mobile service contract. Simply purchase a SIM card, activate it and place it in your T-Mobile cell phone. Prepaid SIM cards are attached to credit card-sized plastic holders referred to as activation cards or SIM holders. You can activate a T-Mobile prepaid SIM card online using the information on the SIM holder along with the information printed on the cell phone.
Open a web browser and navigate to the T-Mobile prepaid activation website (see Resources).
Enter the activation code for your SIM card. The activation code is printed on your SIM holder.
Enter your personal identifying information. The only personal identifying information required for SIM card activation is your date of birth.
Enter your location information. Select the state from which you are requesting service, the city nearest to you and the area code for your phone number.
Enter the SIM card and phone information. Type in the SIM card's serial number, which is the 19-digit number printed on the SIM holder. Do not include the "F" at the end of the number. Type in your phone's serial number, which is the 15-digit number printed on the phone under the battery.
Enter a PIN--the four-digit code you create that you will use to access and manage your prepaid account.
Click the "Activate Phone" button to submit the information and activate your prepaid SIM card.