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The basic telephone was invented by Antonia Meussi
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The first call telephone was done1876 and Alexander Bell called out to Watson
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Alexander Graham Bell started his own telephone company
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The telephone exchange is a "hub" where telephone lines were connected and you could make calls from that area.
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People could start having long distance calls through metal circuits
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The automatic dialing system was created by Amon Brown Strowger it had made dialing much easier.
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This year was when William Gray invented this so people could easily access the phone.
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This is the year when we have accomplished calls between countries.
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This is the year that John Elias Karlin
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The caller ID was introduced by Theodore George Paraskevakos to tell who is calling you or vise versa
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This is the year the first camera phone was created by Philippe Kahn
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This is the year that Steve Jobs had made his smart phone brand. It became very popular around the world.
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This year multiple companies including Samsung, Google Pixel, Xiaomi worked together to make android.