eSIM (embedded SIM) is a type of SIM card that is embedded directly into a device such as a smartphone, smartwatch or tablet. This means that the SIM card is not physically removable, and can only be programmed and reprogrammed remotely by the user or the carrier.

In Europe, eSIM technology is becoming increasingly popular, and many mobile network operators are now offering eSIM support for their customers. This allows users to activate their devices without having to physically swap out SIM cards, and also allows for multiple SIM profiles to be stored on a single device.

The adoption of eSIM technology is also making it easier for users to switch between different mobile network operators, as they can simply activate a new SIM profile on their device without having to physically change the SIM card. This is helping to promote greater competition in the European mobile market, as users are no longer locked into contracts with a single carrier.

Overall, eSIM technology is set to play an increasingly important role in the European mobile market in the coming years, as it offers greater flexibility and convenience for both consumers and carriers alike.