When you get a new device, you’ll have to set it up. To access features like calling, internet, or anything else, you would need to put up a SIM. Traditionally, we use a physical SIM. But as technology has improved, people have started preferring eSIMs.
eSIMs are embedded SIMs, which are a digital form of SIM that is built into your device electronically. In simple terms, your device will always carry a SIM, even if you travel to different countries. It will store different carrier profiles, which you can swap later on according to your own preferences and the country you are travelling to.
One thing you need to make sure of is that before using eSIM, be it Airtel eSIM, Jio eSIM, or Vi eSIM, your mobile phone needs to be compatible with it. These days, all the latest mobile phones already have this technology. But if you are using an old model, make sure to upgrade to a new one.