Trying to figure out how at the software and hardware level eSIMs work in a cellphone.
In: Engineering
Basically, if your phone supports eSIM – it already has a built-in (hardware equivalent to) SIM-card inside. So when you buy a eSIM, you write some identification data into this built-in SIM-card and it’s done. When you buy a classic SIM-card, you actually buy a hardware with pre-entered data.
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