Activate a T-Mobile SIM card on your phone The most common way ... Yes, you can unlock any T-Mobile phone and use it on a new network.

As a new customer, you must pick a phone plan and set up your Metro by T-Mobile account. After you complete that and receive your phone and SIM card, use the activation website to activate your ...

These steps show you how to do it: Power down your phone and then insert the new SIM card ... for this You may find it easier to activate your T-Mobile SIM card on your computer as you'll skip ...