You can remove the SIM card from your Samsung Galaxy S10 using the SIM removal tool that came with your phone, or a very thin paperclip.

A SIM card, or subscriber identity module, is a small card in your cellphone that lets you place phone calls, send text messages, and more.

Since the dawn of the smartphone age, changing your cellular provider followed the same pattern: You’d get a SIM card from your new carrier, find something small enough to poke the tiny hole on the ...