You're probably already familiar with the SIM card, a tiny chip in your phone that connects it to your cell phone carrier of choice. For years, this chip was on a physical card that you could swap in ...

Streamlining the number of eSIMs on your phone is wise if any of the eSIMs are no longer operational or wanted: see How to ...

The newer eSIM technology, which is quickly becoming the standard on high-end phones, is safer and more convenient.

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 ...