Sareena was a senior editor for CNET covering the mobile beat, including device reviews. She is a seasoned multimedia journalist with more than a decade's worth of experience producing stories for ...

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 ...

A SIM card, or subscriber identity module card, is essential component of any phone. It connects your device to a cellular network and stores vital information, including your phone number. Many ...

To switch from one iPhone to another, you should back up everything to your iCloud account and then restore it on the new iPhone.

So different is this from every other iPhone, the iPhone Air is the first flagship since the very first iPhone from 2007 not ...