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The phone was invented by Alexander Graham Bell because of there interest in sound.
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Alexander Graham Bell demonstrated his ability to talk with electricity by talk to his assistant Thomas Watson.
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The Nokia 232, the Sony CM-R111, Ericsson GH337.
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The first smartphone the iphone 1, iphone 2G, iphone original also called the first generation iphone.
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Apple unveiled the iphone 12 and iphone 12 mini that used 5G technology.