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 ...

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 ...

You generally can't use an Apple iPhone on a cell network if it's never been activated with such a network, although once it is activated you can remove your SIM card or simply never connect to the ...

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 ...

Due to in-family upgrades I have an iPhone 5S that no one needs. I'd like to keep it for development purposes, but I don't want to keep track of yet another Apple ID and I don't want to put a sim card ...

Apparently numerous people are facing difficulty activating their new iPhone X, so if you are experiencing that you aren’t alone. But, activation issues aren’t limited to the iPhone X. There have been ...

Find My iPhone app in the news. Photo: Jim Merithew/Cult of Mac The recently revealed exploit that allows anyone to bypass the iPhone’s Activation Lock system is a rather simple process that requires ...