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

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.

If you bought a SIM kit from a non-AT&T retailer and want to activate it with a new AT&T plan ... value data plan It's easy to default to one of the Big Three carriers (T-Mobile, Verizon, or AT&T) ...