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 ...

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 ...

Colorado Springs, Colo.— When EM Microelectronic designed its latest flash memory-based smart card IC, it had flexibility in mind. The flash memory-based smart card IC, dubbed EMTCG176-3G, is designed ...

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 ...