Youll need a number transfer PIN for this You may find it easier to activate your T-Mobile SIM card on your computer as ...

This guide shows you how to activate a physical SIM card or eSIM on your Metro by T-Mobile device. A physical SIM has been the traditional form of SIM card used since the first mobile wireless ...

but none of them involve bringing a new device to T-Mobile. For example, if you want to swap out your SIM card or add a DIGITS Talk & Text line, you will not have to pay the activation fee.