Why Does an eSIM Adapter Need a Card Reader?
A listener wrote in with three questions about his 9eSIM adapter: why the company sells a physical USB reader when his phone can already talk to the card, whether he's paying a performance penalty versus a native eSIM phone, and whether two adapters can run in a dual-SIM handset. This episode works through all three. The reader turns out to be a platform workaround, not a technical necessity — iOS and HarmonyOS NEXT forbid third-party apps from writing to a physical SIM, older Android can't reach the card at all, and fixed devices like routers have no UI to run an app on. Along the way: the…
The skinny
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