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 ...

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

Knowing how to copy contacts from your Samsung phone to a SIM card can come handy if you plan on keeping a copy of numbers in a portable storage that you can later on access in another phone. In order ...