eSIM
Embedded SIM, decouples identity from card
Episodes
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#4541: What Would We Build If Cellular Started From Zero?Exploring whether GSM's legacy parts—IMEI, SIM, circuit switching—are still needed in an all-IP world. -
#872: The Universal Lifeline: How Emergency Calls Really WorkDiscover the invisible global protocols that allow your phone to call for help anywhere in the world—even without a SIM card or a plan.