Are you thinking of making the switch from a physical SIM to an eSIM? The good news is that you may be able to simply convert your SIM card to an eSIM from your device. We’ll walk you through the ...

When you purchase an iPhone 4, your cellular provider will give you a new micro SIM card to use with your new iPhone. Although the cellular provider will automatically activate the SIM card for use on ...

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 ...

Jason Cipriani is based out of beautiful Colorado and has been covering mobile technology news and reviewing the latest gadgets for the last six years. His work can also be found on sister site CNET ...

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 ...