Refer to the instruction included in the package for.
#T MOBILE SIM CARD ACTIVATION UPGRADE#
When switching to a monthly postpaid account, you have a couple of options regarding your phone: Once you access your account, enter your phone number and your phone’s PIN. Log in with your account credentials, or create an account if you do not yet have one by selecting Sign up for T-Mobile ID. To activate your new SIM card online, first insert your new SIM card and then go to the T-Mobile SIM website. But that too is the exception and not the rule.
Follow the instructions after the prompt to activate your new T-Mobile SIM card. As with T-Mobile proper, youll need a SIM card, and youll have to go through the porting process if you want to bring your number. Was able to activate on T-Mobile network without any issues. They can be reached at 1-800-T-Mobile or 1-80.