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  2. SIM Application Toolkit - Wikipedia

    en.wikipedia.org/wiki/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-generation networks being ...

  3. TracFone Wireless - Wikipedia

    en.wikipedia.org/wiki/TracFone_Wireless

    TracFone Wireless, Inc. (TFWI) is an American prepay wireless service provider wholly owned by Verizon.It operates as a mobile virtual network operator offering prepaid and no-contract service on the Verizon, AT&T Mobility, and T-Mobile US networks [2] under multiple brands that include Tracfone, Page Plus Cellular, SafeLink Wireless, SIMPLE Mobile, Total Wireless, and Straight Talk Wireless ...

  4. Unstructured Supplementary Service Data - Wikipedia

    en.wikipedia.org/wiki/Unstructured_Supplementary...

    Unstructured Supplementary Service Data. Unstructured Supplementary Service Data ( USSD ), sometimes referred to as " quick codes " or " feature codes ", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator 's computers. USSD can be used for WAP browsing, prepaid callback service, mobile ...

  5. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

    A typical SIM card (mini-SIM with micro-SIM cutout) T-Mobile nano-SIM card with NFC capabilities in the SIM tray of an iPhone 6s cell phone 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 ...

  6. Mobile number portability - Wikipedia

    en.wikipedia.org/wiki/Mobile_number_portability

    Overview. Mobile number portability is implemented in varying ways across the globe. The international and European standard implements "recipient-led" porting, in which a customer wishing to port a telephone number contacts the new network (recipient), which sends the number portability request (NPR) to the current network operator (donor).

  7. Balance transfer fees are typically 3 percent or 5 percent of the total balance you transfer to your new card. So, for every $10,000 in debt you move to a balance transfer credit card, you’ll ...

  8. Rich Communication Services - Wikipedia

    en.wikipedia.org/wiki/Rich_Communication_Services

    RACSCS Release 8.0 Version 9.0. Added additional chatbot features and vCard 4.0 format support. [103] Version 2.3 (December 2018) [99] RACSCS Release 9.0 Version 10.0. Support for large pager standalone messages. [104] Version 2.4 (October 2019) [99] RACSCS Version 11.0. Removes plug-in integration and includes integrated seamless web-view.

  9. vCard - Wikipedia

    en.wikipedia.org/wiki/VCard

    Standard. RFC 6350. vCard, also known as VCF (Virtual Contact File), is a file format standard for electronic business cards. vCards can be attached to e-mail messages, sent via Multimedia Messaging Service (MMS), on the World Wide Web, instant messaging, NFC or through QR code. They can contain name and address information, phone numbers, e ...

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