What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...

When Apple announced the iPhone XS, XS Max, and XR, the company announced that -- for the first time -- it would be possible to use two phone numbers on the same phone using eSIM technology. An eSIM ...

Apple has made the SIM-free variant of the iPhone Xr available from its web site. The phone ships unlocked and without service from any wireless carrier. People who buy the phone will need to use an ...