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  2. Ogo (handheld device) - Wikipedia

    en.wikipedia.org/wiki/Ogo_(handheld_device)

    Ogo is a handheld electronic device that enables communication via instant messaging services, email, MMS and SMS text messages. The device works through GSM cellular networks and allows unlimited usage for a flat monthly fee. It supports AOL Instant Messenger, Yahoo! Messenger, and MSN Messenger. It was released in 2004.

  3. Comparison of user features of messaging platforms - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_user...

    The MMS standard extends the core SMS (Short Message Service) capability, allowing the exchange of text messages greater than 160 characters in length. Unlike text-only SMS, MMS can deliver a variety of media, including up to forty seconds of video, one image, a slideshow [31] of multiple images, or audio. The first MMS-capable phones were ...

  4. List of wireless network technologies - Wikipedia

    en.wikipedia.org/wiki/List_of_wireless_network...

    2G (or 2-G) provides three primary benefits over their predecessors: phone conversations are digitally encrypted; 2G systems are significantly more efficient on the spectrum allowing for far greater mobile phone penetration levels; and 2G introduced data services for mobile, starting with SMS (Short Message Service) plain text-based messages. 2G technologies enable the various mobile phone ...

  5. Text messaging - Wikipedia

    en.wikipedia.org/wiki/Text_messaging

    As of 2007, text messaging was the most widely used mobile data service, with 74% of all mobile phone users worldwide, or 2.4 billion out of 3.3 billion phone subscribers, being active users of the Short Message Service at the end of 2007. In countries such as Finland, Sweden, and Norway, over 85% of the population used SMS.

  6. Unstructured Supplementary Service Data - Wikipedia

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

    The service does not require a messaging app, and does not incur charges. [2] USSD messages are up to 182 alphanumeric characters long. Unlike short message service (SMS) messages, USSD messages create a real-time connection during a USSD session. The connection remains open, allowing a two-way exchange of a sequence of data.

  7. Mobile technology - Wikipedia

    en.wikipedia.org/wiki/Mobile_technology

    Later in 1991, the development of 2G introduced Short Message Service (SMS) and Multimedia Messaging Service (MMS) capabilities, allowing picture messages to be sent and received between phones. [3] In 1998, 3G was introduced to provide faster data-transmission speeds to support video calling and internet access.

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