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. I started my career with CNET all the way back in ...

If you’ve ever upgraded your phone, you likely know what a SIM card is and what it’s for. In short, a SIM card is a small chip that lets you connect to your carrier’s network. While physical SIM cards ...

eSIM is a modern version of the traditional SIM card that comes built into a smartphone. Unlike a physical SIM, users do not need to insert or remove the card. Instead, your mobile operator can ...

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 ...