What is eSIM?
eSIM is a SIM card that is embedded in the device. It is a service that gives you the convenience of having more than one cellular connectivity providers on a single iPhone at one time. You can have separate providers for personal things and business deals, add an additional line for traveling abroad.
The eSIM works on unlocked eSIM-compatible devices only. When using the eSIM, you do not need a physical SIM card: on an eSIM compatible device, you can start connecting by simply scanning a QR Code or manually entering details provided in the confirmation email to the app.