An eSIM, or embedded SIM, is a digital SIM card that is built into a device, such as a smartphone or tablet, eliminating the need for a physical SIM card. It allows users to connect to mobile networks without the hassle of physically inserting or swapping SIM cards. With an eSIM, users can switch between different mobile networks and activate new plans directly through their device’s settings. It provides greater flexibility and convenience, especially for travellers, as it enables seamless connectivity in multiple countries without the need to acquire and change physical SIM cards.