If you're a new T-Mobile customer or you recently purchased a new phone, you may have a new SIM card you'll need to activate. Here's how to set it up.

T-Mobile's self-service SIM managing tool is back in the T-Life app. Here's how to get it set up and transfer your own SIM ...

The process to activate a T-Mobile prepaid SIM card is nearly identical to regular T-Mobile SIM cards. Just put it in your device, and call 1-800-937-8997. Activate the SIM online ...

You can purchase a SIM card online at T-Mobile.com, by calling T-Mobile at 800-866-2453 or at any T-Mobile retail store. T-Mobile offers both pre and postpaid SIM cards.

T-Mobile’s program for swapping out all the Sprint SIM cards is called the T-Mobile Network Experience. As the T-Mobile site explains , your Sprint account will stay the same. You’ll keep the ...

T-Mobile removed the self-service option for SIM card changes in 2022 to implement new security features to combat SIM swap attacks. At the time, the company did not share a timeline for when the ...

The new "Account Change Engine" by T-Mobile vets SIM card swap requests for enhanced security, now requiring text message confirmation. As SIM cards go digital, security against SIM swap attacks ...

May 1: Customers without a T-Mobile SIM will lose service. If you are still using a Sprint SIM card on a device that is compatible with T-Mobile’s network, the carrier will swap your SIM for free.