To transfer contacts from iPhone to iPhone, using iCloud is the easiest method. Ensure both iPhones are signed in with the same Apple ID/Apple Account. On both phones, open Settings > tap your name > ...

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 ...