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 ...

For the longest time, using a physical SIM (Subscriber Identity Module) card was the only way to connect cell phones to a carrier's network. Although physical SIM cards have gotten smaller over the ...

If your new phone no longer supports SIM cards, or you don't want to use them anymore, you can convert to eSIM instead. I started my career with CNET all the way back in 2005, when the (original) ...