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Alexander Graham Bell's invention of the telephone in 1876
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Telephone transmission extends across and between major cities
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Bell System companies begin installing switching systems and rotary-dial telephones
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The first transatlantic telephone cables installed from Scotland to Nova Scotia, providing telephone service between North America and the United Kingdom. It takes 3 years and $42 million to plan and install, using 1,500 nautical miles of specially insulated coaxial cable.
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The first portable cell phone call is made by Martin Cooper of Motorola. Although mobile phones had been used in cars since the mid-1940s, Cooper’s was the first one invented for truly portable use. He and his team are awarded a patent in 1975.
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In 1999, the Japanese firm NTT Docomo released the first smartphones to achieve mass adoption within a country.
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The number of cellular telephone subscribers in the United States grows to 100 million, from 25,000 in 1984.
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The first camera phone was sold in 2000 in Japan, a J-Phone model,
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n 2007, Apple Inc. introduced the iPhone, one of the first mobile phones to use a multi-touch interface.
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13 MP, 4160 x 3120 pixels,