An eSIM, or Embedded SIM, is a type of SIM card that is built into a device, such as a smartphone or tablet, rather than being a physical card that can be removed and replaced. Unlike traditional SIM cards, an eSIM cannot be removed from the device and is instead programmed directly into the device's hardware.
The main advantage of an eSIM is that it allows you to switch mobile service providers or change your plan without having to physically change your SIM card. This makes it easier to switch carriers and keep your device connected when traveling abroad, as you can simply download a new profile from your carrier over-the-air.
Additionally, because eSIMs are built into the device, they can offer more space for additional features and services, such as dual-SIM functionality, remote management of device settings, and over-the-air updates.
Overall, eSIMs offer a more flexible and convenient way of using mobile services compared to traditional SIM cards. However, not all devices support eSIMs, and the availability of eSIM services may vary depending on your location and mobile service provider.