You're probably already familiar with the SIM card, a tiny chip in your phone that connects it to your cell phone carrier of choice. For years, this chip was on a physical card that you could swap in ...

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

If you need to find out your iPhone's carrier without a SIM card installed, you can do so through the Settings app.

The physical SIM cards we've used for decades are slowly being phased out. With the Pixel 10 series, Google's phones have gone eSIM-only for the first time—at least if you buy them in the US. Apple ...

Have you found yourself unable to send or receive messages on your iPhone? Or are iMessages being sent from your email ...

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 ...

Newer iPhone models come preset with SOS mode. Once activated, this feature contacts emergency services to assist one in need. It can be used without SIM cards and even activated when the cell service ...