A virtual phone number is not eSim. It's used within the app (calls, sms) / web (receiving sms) and works via the Internet. Such a number doesn't require activation on the device.

The app - https://apps.apple.com/app/esim-internet-worldwide/id1482736281  / https://play.google.com/store/apps/details?id=com.appvillis.esim&hl=en&gl=CA
The web version - https://esimplus.me/virtual-number 

As soon as you purchase a virtual number, ensure that you are connected to the Internet and use a virtual number within the app or the web version globally, exchanging text messages, and using VoIP in any corner of the world.

You won’t need a physical SIM card to be able to utilize a virtual phone number. Activating it won’t take much time and effort because you’ll be using your virtual number online.

Our virtual numbers will work perfectly fine with smartphones of any model, regardless of them supporting eSIM or not.