In recent years, physical SIM cards have gradually given way to eSIM technology. Jio, Vodafone Idea (Vi), and Airtel, the three largest telecom operators in India, offer eSIM functionality for supported devices. Unlike traditional SIM cards, it can be activated digitally. Jio supports eSIM activation on a wide range of compatible Android smartphones, iPhones, tablets, and smartwatches. It also offers an option to convert your physical SIM to eSIM for devices that support it.