The setting page is different for iPhone and for Android.
For iPhone :
Go to Setting => Cellular/Mobile, you should be able to see our eSIM (with a 14 digits number starts with 0200 or a 9,10 digit number starting with 070(+81 70), 080 (+81 80) ....) on this page.
For Android :
Go to setting => SIM card management, you should be able to see our eSIM under the eSIM section.
