Unlike a regular SIM card, which can be changed, an eSIM is permanently built into the device and cannot be replaced. “E” in eSIM comes from the English word “embedded” – built-in or integrated. eSIM uses the same specifications as regular SIM cards. Therefore, they are compatible with each other, and in practical use it makes no difference what type of SIM card is installed in your smartphone.
The main advantage of eSIM is that the SIM card chip can be quickly transferred to another operator. In addition, with eSIM there are no problems with improper SIM card sizes. This speeds up and simplifies the transition to a new communication provider. eSIM is also beneficial for smartphone manufacturers: since the eSIM is built into the device, it eliminates the need to create additional connectors to access the inside of the gadget.
The relative disadvantage of the eSIM is that there are still very few eSIM providers on the market at the moment. Some mobile operators do not take this technology seriously. In Europe, eSIMs are available from Telekom and Vodafone. It will take some more time until eSIM will gain a strong position in the market and come to Russia.
By the way, the new iPhone Xs will support two SIM cards, one of which is an eSIM.
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