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.

Google's Pixel 10 series eliminates physical SIM cards in the US. If you're worried about the change, here's why you shouldn't be.

At first, the T-Mobile SIM card was in the Galaxy S25 Ultra with my personal Google Fi SIM in my iPhone 16 Pro, however, I moved the latter to the Galaxy S25 Plus for this test.

Audi Connect services are enabled with an enhanced, ruggedized T-Mobile® SIM card connected to T-Mobile’s robust network inserted into the advanced Audi MMI® Navigation Plus system.

If you're a T-Mobile customer, there are several ways to get a new number. You don't need a new SIM card, and you don't need to buy a new phone, but you can if you want.

If your new phone no longer supports SIM cards, or you don't want to use them anymore, you can convert to eSIM instead.