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. These days, physical SIM ...

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 ...

Still works with older phones. Easy to find in local markets. But requires physical handling and SIM swapping. Limited flexibility compared to eSIM. No remote activation, you need to be on-site. When ...

Are you thinking of making the switch from a physical SIM to an eSIM? The good news is that you may be able to simply convert your SIM card to an eSIM from your device. We’ll walk you through the ...

A SIM card is a unique identifier in every cell phone that enables the device to connect to wireless networks in order to text and make calls. An eSIM refers to an “embedded” SIM, or a card that is ...

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) ...

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 ...