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  2. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

    A SIM ( Subscriber Identity Module) card is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone devices (such as mobile phones and laptops ).

  3. GSM - Wikipedia

    en.wikipedia.org/wiki/GSM

    Subscriber Identity Module (SIM) A nano sim used in mobile phones. One of the key features of GSM is the Subscriber Identity Module, commonly known as a SIM card. The SIM is a detachable smart card containing a user's subscription information and phone book. This allows users to retain their information after switching handsets.

  4. GSM modem - Wikipedia

    en.wikipedia.org/wiki/GSM_modem

    A GSM module works by connecting to the GSM network through a SIM card. The SIM card provides the module with a unique identification number, which is used to identify the device on the network. The GSM module then communicates with the network using a set of protocols, which allows it to send and receive data.

  5. SIM Application Toolkit - Wikipedia

    en.wikipedia.org/wiki/SIM_Application_Toolkit

    SIM Application Toolkit. SIM Application Toolkit ( STK) is a standard of the GSM system which enables the subscriber identity module (SIM card) to initiate actions which can be used for various value-added services. [1] Similar standards exist for other network and card systems, with the USIM Application Toolkit (USAT) for USIMs used by newer ...

  6. Apple SIM - Wikipedia

    en.wikipedia.org/wiki/Apple_SIM

    The Apple SIM is known as a Removable SIM with Remote Provisioning [4] – it is a special SIM card that may be configured with different operator profiles. This is in contrast to an embedded SIM, which is not removable and may also be remotely provisioned. It appears that Apple has begun to include both types of SIM in their newer devices.

  7. ISO/IEC 7816 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_7816

    ISO/IEC 7816. ISO/IEC 7816 is an international standard related to electronic identification cards with contacts, especially smart cards, and more recently, contactless mobile devices, managed jointly by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) .

  8. International mobile subscriber identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    Website. www .itu .int /rec /T-REC-E .212. The international mobile subscriber identity ( IMSI; / ˈɪmziː /) is a number that uniquely identifies every user of a cellular network. [1] It is stored as a 64-bit field and is sent by the mobile device to the network. It is also used for acquiring other details of the mobile in the home location ...

  9. Universal integrated circuit card - Wikipedia

    en.wikipedia.org/wiki/Universal_integrated...

    A 25 × 15 mm Vodafone New Zealand SIM card. The universal integrated circuit card ( UICC) is the smart card ( integrated circuit card) used in mobile terminals in 2G ( GSM ), 3G ( UMTS ), 4G ( LTE ), and 5G networks. The UICC ensures the integrity and security of all kinds of personal data, and it typically holds a few hundred kilobytes.

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