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  2. Telephone keypad - Wikipedia

    en.wikipedia.org/wiki/Telephone_keypad

    A telephone keypad using the ITU E.161 standard. A telephone keypad is a keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number. It was standardized when the dual-tone multi-frequency signaling (DTMF) system was developed in the Bell System in the United States in the 1960s – this ...

  3. Text messaging - Wikipedia

    en.wikipedia.org/wiki/Text_messaging

    Text messaging. A text message using SMS – the 160 character limit and difficulty of typing on feature phone keypads led to the abbreviations of "SMS language". A text message conversation on an iPhone. Text messaging, or texting, is the act of composing and sending electronic messages, typically consisting of alphabetic and numeric ...

  4. SMS language - Wikipedia

    en.wikipedia.org/wiki/SMS_language

    SMS language. SMS language displayed on a mobile phone screen. Short Message Service (SMS) language, textism, or textese[a] is the abbreviated language and slang commonly used in the late 1990s and early 2000s with mobile phone text messaging, and occasionally through Internet -based communication such as email and instant messaging.

  5. National conventions for writing telephone numbers - Wikipedia

    en.wikipedia.org/wiki/National_conventions_for...

    All telephone numbers in Iran have 11 digits (initial 0 and ten digits). The first two or three digits after the zero are the area code. The possibilities are: (0xx) xxxx xxxx (for landlines), 09xx xxx xxxx (for cellphones) and 099xx xxx xxx (for MVNO). When making a call within the same landline area code, initial 0 plus the area code must be ...

  6. Number sign - Wikipedia

    en.wikipedia.org/wiki/Number_sign

    The symbol # is known variously in English-speaking regions as the number sign, [1] hash, [2] or pound sign. [3] The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔ .

  7. T9 (predictive text) - Wikipedia

    en.wikipedia.org/wiki/T9_(predictive_text)

    T9 (predictive text) Logo of T9. T9 is a predictive text technology for mobile phones (specifically those that contain a 3×4 numeric keypad), originally developed by Tegic Communications, now part of Nuance Communications. T9 stands for Text on 9 keys.[1] T9 was used on phones from Verizon, NEC, Nokia, Samsung Electronics, Siemens, Sony Mobile ...

  8. Arabic chat alphabet - Wikipedia

    en.wikipedia.org/wiki/Arabic_chat_alphabet

    The Arabic chat alphabet, Arabizi, [1] Arabeezi, Arabish, Franco-Arabic or simply Franco[2] (from franco-arabe) refer to the romanized alphabets for informal Arabic dialects in which Arabic script is transcribed or encoded into a combination of Latin script and Arabic numerals. [3][4] These informal chat alphabets were originally used primarily ...

  9. E.164 - Wikipedia

    en.wikipedia.org/wiki/E.164

    E.164 is an international standard (ITU-T Recommendation), titled The international public telecommunication numbering plan, that defines a numbering plan for the worldwide public switched telephone network (PSTN) and some other data networks. E.164 defines a general format for international telephone numbers.