Kyocera DIGNO BX2 Manual page 7

eSIM
eSIM is a type of SIM that is embedded in a device. If your device supports an eSIM,
you only need to set up a service plan that you purchased with eSIM and start using it.
You don't need a USIM card.
Download your service plan with eSIM

Enable or disable eSIM

Erase your service plan with eSIM

Handling eSIM
To learn about setting up your service plan with eSIM, see the following website.
https://www.softbank.jp/mobile/support/product/sim/esim/
Download your service plan with eSIM
In Home Screen,
5/88
Preparing to Use Handset
(Settings) Network & internet