Three quick steps. No account needed.

You can also dial *#06# and look for an EID.
The model name is not always enough. This check is definitive.
Open the phone dialler and enter that code.
If an EID appears next to the IMEI, the phone has eSIM.
An unlocked phone with an EID can install a Simchao eSIM.

iPhone: Settings, Cellular, Add eSIM
Pixel: Settings, Network and internet, SIMs
Samsung: Settings, Connections, SIM manager