Telecommunications

SIM & eSIM

How devices identify themselves to mobile networks.

Terms

4 terms

  • eSIM

    An eSIM is an embedded, reprogrammable SIM chip that lets a mobile device download operator profiles over the air instead of using a physical SIM card.

  • eSIM profile

    An eSIM profile is the downloadable package of operator identity, keys and settings that lets an eUICC chip connect a device to one mobile network.

  • iSIM

    An iSIM is a SIM function built into a secure enclave of the device's main processor, holding remotely provisioned operator profiles without a SIM chip.

  • SIM card

    A SIM card is a removable smart card that stores a subscriber identity and secret keys so a mobile network can authenticate the device and bill…