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 ...

Apple is enabling purchasers of the iPhone XS and iPhone XR to take advantage of eSIM technology to set up two carrier connections, allowing customers to use different plans while roaming or to use ...