The successor of SIM cards was supposed to be eSIM technology, but we will have to wait for its mass implementation.
The GSMA organization has announced that it is postponing the development of eSIM due to an investigation by the Department of Justice. It is a collusion between the largest US operators who are to deliberately slow down the development of technology. The introduction of eSIM to all phones and smartphones will cause that users will not be tied to one network, and switching to competition services will be child's play.
What is eSIM? It's an idea to replace the removable SIM cards with one built-in. In principle, this invention was to help manufacturers design enclosures, and help users to solve the problem of lost cards.
Such a function does not mean attachment to one operator - the built-in card could, after appropriate configuration, support any service provider. This would also open up new opportunities for manufacturers who could sign agreements with operators regarding the default configuration of the embedded card for a specific network. eSIM also solves the problem of handling multiple cards - virtual profiles allow you to freely switch between different accounts / numbers
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