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eSim stands for embedded SIM, and is a programmable SIM that is embedded directly into the device. With the eSim in action, there would be no use of the physical sim cards and that would help us in many a different aspect. It is soldered on the circuit board of the mobile phone, and the interface is the same as a Mini or Micro sim card. Switching the carrier would be much easier as you will not have to do all the physical switch and instead just make a phone call to switch or set numbers. The eSim technology is rewritable, and works just like the NFC chip.



Integrated circuit card identifier (ICCID) are stored in the sim cards, and that is what makes them identifiable. The official backing of GSMA is what making the eSIM technology a reality, and it is going to be a big change after many a year. The issues of getting different sim types (micro, mini or nano) for different phones would be over, and if your phone gets lost then the process would be easier to get the number again. As the sim card would be embedded on the motherboard of the phone, so you would not even have the problem of losing the sim or it getting corrupted.



The devices that have already come up with the eSim technology are Apple watch series 3, second generation of iPad Pro, iPhone XR, XS and XS Max. But right now the phones have eSim for the use of secondary sim card, and for the primary there is still the same physical slot. Later, we are expecting the phones to come with a full-fledged functionality of eSim technology that will give the users the option of having multiple sim cards without having any physical card. Soon, you will be having a phone with the eSim technology, are you excited?



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- Rajat Priyam
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