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 ...

We previously reported that a tiny handful of iPhones shipped without SIM cards, while significantly more units have generated the error message "No SIM card ...

Activate your iPhone back to AT&T if the SIM card you insert after you install blackra1n onto the device doesn't work properly. Blackra1n is a third-party program that "jailbreaks" SIM-bearing iPhones ...

Drug dealers. Cheating spouses. Spies. They can all benefit from Ready SIM, a SIM card that self-destructs–well, kind of. The prepaid wireless service, which leverages T-mobile’s network, collects no ...

Owners of cellular iPads are no longer able to use a supplied Apple SIM to activate a data plan for their tablet, forcing users to either use a different physical SIM or move to eSIM. Apple included ...

Jeremiah is a US-based blogger who bought a Nexus One the day it came out and never looked back. In his spare time he watches Star Trek, cooks eggs, and completely fails to write novels. Update: ...