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.

These two ways of connecting your phone to a cellular network are very different. We tell you about each and how you can switch from one to another.

How do SIM cards work? A SIM card is a small card that identifies you on a mobile network. It has a unique number called the IMSI, which the network uses to verify your identity when you connect.

Learn about eSIMs and iSIMs, the integrated alternatives to physical SIM cards, offering seamless, flexible, and secure network access, communication equipment & devices ...

Degrade a SIM card enough and it will no longer work as a key or even be recognised as a SIM card, but until you reached that point phone functions should continue to work normally.

While normal SIM cards are still widely used in India, eSIM is slowly becoming the future of connectivity. As more phones and smart devices support eSIM, Indian users will get the flexibility to ...

For many years, mobile phones received cellular service through a physical SIM (subscriber identity module) card that connected your handset to your phone carrier. These physical SIM cards made it ...