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 ...

If cellular data is not working on your iPhone, there are several ways to potentially resolve the issue. To fix your cellular data, try toggling both Airplane mode and Mobile Data in the Control ...

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 ...