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 ...

All modern iPhones and iPads now use nano-SIM cards. Unfortunately, this can be a bit of a problem for anyone switching from an older device, because the nano-SIM is much smaller than the micro-SIMs ...

Switching or getting a New iPhone but want to keep everything you had before? For those who know it may be obvious but their are plenty of people that could miss that micro hole on the side as with ...

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 ...

Once you’ve activated your iPhone with your carrier, it should continue to work on the cellular network without any problems as long as you’re within range of a tower. Nevertheless, the vagaries of ...

To remove the SIM card from your iPhone, all you need is a SIM card ejection tool or paperclip. Sticking the ejection tool into your iPhone's SIM card tray will remove the card. Your iPhone's SIM card ...