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[http://www.americaslibrary.gov/jb/recon/jb_recon_telephone_1.html] The first telephone call ever made was by Alexander Graham Bell in 1876.
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[https://en.wikipedia.org/wiki/History_of_the_telephone] [http://www.juliantrubin.com/edisoninvent.html] Before his famous merit of inventing the light bulb, Thomas Edison decided to to invent the carbon microphone, which produced a strong telephone signal.
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[http://www.sparkmuseum.com/TELEPHONE.HTM] Almon Strowger first invented the candlestick telephone in the late 1800s
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[http://visionlaunch.com/when-was-the-rotary-phone-invented/] The first rotary phone was invented in 1896 by John and Charles Erickson and their partner A.E. Keith.
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[https://en.wikipedia.org/wiki/Answering_machine] Valdemar Poulsen invented the answering machine in 1898.
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[http://www.ithappenedinthe60s.com/posts/november-18-1963-introduction-of-the-push-button-telephone/] Bell Telephone introduced the first push-button telephone on November 18, 1963.
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[http://www.scmp.com/news/world/article/1173948/brazilian-inventor-caller-id-struggles-collect-royalties] Theodore George “Ted” Paraskevakos invented the caller ID in 1968.
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[https://en.wikipedia.org/wiki/History_of_mobile_phones] Martin Cooper, a Motorola executive, invented the first mobile phone on April 3, 1973.
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[https://www.slideshare.net/profejoee/the-90s-inventions] Kazuo Hashimoto Invented the first digital answering machine in 1983, but it wasn't available to the public until 1991.
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[http://www.businessinsider.com/worlds-first-smartphone-simon-launched-before-iphone-2015-6] The first smartphone was invented by IBM in 1992
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[https://en.wikipedia.org/wiki/IPhone] On June 29th, 2007, Apple started a line of smartphones that changed phones forever.
