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What are aSIMS and how are they used?
An eSIM is an embedded SIM card that, unlike a traditional SIM card, is only the chip part of a SIM. These are embedded directly into designs and allow for on-the-fly reprogramming. This reprogramming can be done in a multitude of different ways, including NFC, phone call, or programming jig. Once programmed, the device using the eSIM can connect to a network, and operate as if it was connected to a physical SIM card. As such, an eSIM eschews the necessity to switch physical SIM cards or phones when you want to change carriers.
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