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Alexander Graham Bell invented the Telephone in 1874
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Nathan B. Stubblefield introduced the Wireless phone.
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in 1970s the first cordless phone was introduced.the first tone-touch system that use tone in the voice frequency range in 1941.Granting a greater frequency range allowed cordless phones to have less interference and need less power to run.
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The first cellular phone was invented and demsonstrated in 1973, by MArtin Cooper.using the prototype Motorola Dyna-Tac.
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the first blackberry was lauched in 1999
