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  2. History of mobile phones - Wikipedia

    en.wikipedia.org/wiki/History_of_mobile_phones

    The history of mobile phones covers mobile communication devices that connect wirelessly to the public switched telephone network. While the transmission of speech by signal has a long history, the first devices that were wireless, mobile, and also capable of connecting to the standard telephone network are much more recent.

  3. Mobile phone - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone

    A mobile phone or cell phone[a] is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone (landline phone). The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which provides ...

  4. Smartphone - Wikipedia

    en.wikipedia.org/wiki/Smartphone

    Smartphone. The "Sooner" prototype Android smartphone. A smartphone, often simply called a phone, is a mobile device that combines the functionality of a traditional mobile phone with advanced computing capabilities. It typically has a touchscreen interface, allowing users to access a wide range of applications and services, such as web ...

  5. Martin Cooper (inventor) - Wikipedia

    en.wikipedia.org/wiki/Martin_Cooper_(inventor)

    Martin Cooper (inventor) Martin Cooper (born December 26, 1928) is an American engineer. He is a pioneer in the wireless communications industry, especially in radio spectrum management, with eleven patents in the field. [2][3] On April 3, 1973, he placed the first public call from a handheld portable cell phone while working at Motorola, from ...

  6. History of telecommunication - Wikipedia

    en.wikipedia.org/wiki/History_of_telecommunication

    The history of telecommunication began with the use of smoke signals and drums in Africa, Asia, and the Americas. In the 1790s, the first fixed semaphore systems emerged in Europe. However, it was not until the 1830s that electrical telecommunication systems started to appear. This article details the history of telecommunication and the ...

  7. The history of the American phone book - AOL

    www.aol.com/history-american-phone-book...

    As phone lines became more popular—between 1942 and 1962, the number of phones in the U.S. grew 230% to 76 million—telephone companies realized they would run out of phone numbers.

  8. History of the telephone - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telephone

    The history of mobile phones can be traced back to two-way radios permanently installed in vehicles such as taxicabs, police cruisers, railroad trains, and the like. Later versions such as the so-called transportables or "bag phones" were equipped with a cigarette-lighter plug so that they could also be carried, and thus could be used as either ...

  9. History of Nokia - Wikipedia

    en.wikipedia.org/wiki/History_of_Nokia

    History of Nokia. Nokia is a Finnish multinational corporation founded on 12 May 1865 as a single paper mill operation. Through the 19th century the company expanded, branching into several different products. In 1967, the Nokia corporation was formed. In the late 20th century, the company took advantage of the increasing popularity of computer ...