Seeing “No SIM” or “Invalid SIM” on iPhone? Check your SIM card, restart, or update your carrier settings. Simple fixes often ...

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 newer eSIM technology, which is quickly becoming the standard on high-end phones, is safer and more convenient.

A SIM built into your phone, or one you insert. What's the difference between the two mobile connections? Here's everything ...

Have you ever wondered exactly how a SIM card works? We’ll help you understand why your phone needs one and what they do to keep you connected. Image: TalkAndroid Editorial Note: Talk Android may ...

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

Having a carrier-locked phone can make it difficult if you want to sell your phone or move carriers. Here are a few ways to tell the status on your iPhone.

Rumors in recent years have said that the iPhone would abandon its physical SIM card in the US. Apple did just that with the iPhone 14 series. Rather than a SIM card, the US versions rely on eSIMs ...