Buy or replace a SIM card

Learn how to buy or replace a T-Mobile SIM card.



If you don't have T-Mobile yet

If you're looking to start service with T-Mobile and already have a device, you'll need a T-Mobile SIM to get started. Here's how to get one:




If you have T-Mobile and need a replacement



Activating your new SIM card

  • If you're new to T-Mobile and just got your SIM card, it's most likely already activated. You just need to insert the SIM card and go!
  • If you're a new prepaid customer, check out Activate your Prepaid service.
  • If you already have T-Mobile and this is a replacement SIM, you'll need to contact us or stop by a store to complete the change.