A physical SIM card is essentially a tiny card with a chip that connects your phone to your wireless carrier. It contains ...

If you have multiple mobile devices, use the email confirmation to verify ... may find it easier to activate your T-Mobile SIM card on your computer as you'll skip the call to customer service ...

Chen is The Times’s lead consumer technology writer and the author of Tech Fix, a column about the social implications of the tech we use ... SIM card embedded into the phone’s computer ...

Embedded SIM ... them—or even use more than one simultaneously. The iPhone XS, XS Max, and XR were the first iPhone models to include an eSIM alongside a physical SIM card.