An e-SIM is a built-in, programmable SIM that lets you connect to the network of your choice without having to acquire a dedicated SIM card first.
The term “eSIM” relates to a new standard being promoted by the GSMA – the association that represents network operators worldwide.
It will come in the form of an integrated SIM chip, one that cannot and need not be removed from a device – something that consumer electronics manufacturers are also keen to adopt for connected items around the house as part of the Internet of Things.
The information on it will be compliant or rewritable by all operators, meaning a user can decide to change operator with a simple phone call. A new SIM will not be required, nor should there be any time delay in switching the e-SIM to its new purpose. There will also be no physical swapping over required by the user.
