Just curious.
I used eSim for a while when I first got a phone that supported eSim, because I wanted to make it harder for a thief to disable the phone tracking, but now my main phone is broken and I’m a bit annoyed at having to chat with customer support for half and hour to activate eSim on another device.
eSim
From my understanding, its a chip inside your phone that allows you to download Sim cards onto your phone. You could switch carriers without visiting a store or waiting days for the sim to arrive, just take minutes to an hour depending on which carrier you choose. Cool concept in my opinion, just not very mature at the moment.