Samsung’s Galaxy S20 and Galaxy Z Flip are joining the iPhone 11, Pixel 4, Galaxy Fold and the new, foldable Motorola Razr as the small handful of phones that use a new technology called eSIM. What that means depends on the phone. For some, like the Razr, you can ditch your plastic SIM card altogether. For others, like the iPhone 11 and Galaxy S20, you can have two phone numbers assigned to one phone.
A SIM card is the essential ingredient in connecting your phone to a cellular network, making calls and sending texts using your phone number. An eSIM does the same thing, but instead of a plastic chip you can remove from your phone, it’s part of your phone’s internal components.