Typically you will need to have the following when signing up for a plan with an eSIM:
Name
Email
Address
Payment method
Device that is able to support eSIMs
You will also need to have a stable internet connection in order to install and activate the eSIM
If you are porting, there are other things that you will need:
Address and postal code that matches what your old carrier has on file
PAC Code (which you can get by texting “PAC” to 65057).
Current mobile phone number that you want to port