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  2. Rich Communication Services - Wikipedia

    en.wikipedia.org/wiki/Rich_Communication_Services

    Rich Communication Services ( RCS) is a communication protocol standard for instant messaging, primarily for mobile phones, developed and defined by the GSM Association ( GSMA ). It aims to be a replacement of SMS and MMS on cellular networks with a communication system that is richer and modern.

  3. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.

  4. Text messaging - Wikipedia

    en.wikipedia.org/wiki/Text_messaging

    Text messaging, or texting, is the act of composing and sending electronic messages, typically consisting of alphabetic and numeric characters, between two or more users of mobile phones, desktops / laptops, or another type of compatible computer. Text messages may be sent over a cellular network or may also be sent via satellite or Internet ...

  5. 12 Most Used Messaging Apps - Engadget

    www.engadget.com/2016-09-30-12-most-used...

    4. Line With over 200 million active users, Line is a free app that enables users to make free calls and send messages. It is a popular app in the Asian countries. The messaging app has numerous ...

  6. Viber users can now get local numbers in the US, UK and ...

    techcrunch.com/2019/04/08/viber-users-can-now...

    Viber Local Number, as the service is called, is available to anyone globally, but for now the numbers you can register are in the U.S., U.K. and Canada, with more countries getting added soon.

  7. 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 ...

  8. Talkatone Lets You Make Calls And SMS Over Wifi For Free, No ...

    techcrunch.com/2011/05/04/talkatone-lets-you...

    Like Pinger, Talkatone lets you make phone calls using Wifi. Unlike Pinger, Talkatone uses Google Voice as a channel to let you make and receive phone calls to and from your phone contacts, for free.

  9. Telephone numbers in the Philippines - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_the...

    Within Metro Manila, Rizal, and cities of Bacoor and San Pedro: 8123-4567. Outside Metro Manila, Rizal, and cities of Bacoor and San Pedro: 02-8123-4567. Overseas calls: +63-2-8123-4567. Since October 6, 2019, all telephone numbers with the area code 2 were migrated to eight digits, as mandated by the National Telecommunications Commission's ...