Our Gazelle Certified T-Mobile phones are locked to the T-Mobile network, meaning they can only be activated using a T-Mobile SIM card. If you intend to use a T-Mobile locked device on a carrier other than T-Mobile, such as MetroPCS or Straight Talk, we strongly recommend you first contact that carrier about the use of the specific T-Mobile locked device you want to purchase with their service.

Gazelle devices do not include SIM cards. If you already have a compatible T-Mobile network SIM, you can insert it into your new device for immediate activation. Otherwise, you will have to source one from your carrier. If you are uncertain what size SIM is compatible with a given device, check the "Specifications" section of the product listing for more information.