Traditional nano-, micro- or mini-SIMs have dominated mobile connection delivery for smartphones during the devices' rise in the 21st century. Now, however, ABI Research think eSIMs are going to start cutting into this market, amassing hundreds of millions of sales over the next few years.
https://www.notebookcheck.net/eSIM-phone-shipments-could-number-at-least-400-million-by-2022.332694.0.html