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 ...

Phone suddenly showing "No SIM" or "Invalid SIM"? Don't panic, there are a few quick checks that can get you reconnected fast.

We reported that Dual SIM support for iPhone XS, iPhone XS Max, and iPhone XR would be coming in a software update later this year. With today’s release of iOS 12.1, Apple is now officially supporting ...

Apple typically launches new iPhones with carrier SIM cards pre-installed and doesn’t offer a SIM-free version on launch. Today we’re seeing the iPhone XR SIM-free models show up both on Apple’s ...