A SIM card, or subscriber identity module, is a small card in your cellphone that lets you place phone calls, send text ...

A dual-SIM setup lets you use one phone to make and receive calls and texts from two numbers. It's also super convenient and can save you serious cash when traveling. We show you how to use two SIMs ...

Seeing a SIM Not Provisioned error message on your Android phone can be extremely annoying. Here's what's causing it, and how ...

Removing a SIM card from your phone can sometimes seem like a daunting task, but it is a relatively straightforward process that can be necessary for various reasons, such as switching carriers, ...

If you can't make a call or if you see an error message that your phone's SIM card is not working, there are several ways to ...

The iPhone Air will only have an eSim - will other phone makers also shift away from the familiar - but fiddly - plastic ...

Nida is a tech and telecom journalist with more than five years of writing experience. She graduated from the University of Toronto with a BA in journalism. You have more than one option for ...

The cut corner on a SIM card serves a crucial practical purpose: ensuring correct orientation and preventing damage to the ...

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 ...