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.

If you’ve ever upgraded from one cell phone to another, you have likely had to swap your SIM card: the tiny chip that pops into a storage slot in your device to connect you to your carrier’s cellular ...

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 ...