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Telegraph
Samuel B. Morse created the first device that could send messages almost instantly using morse code on a device that sends information through wires to another device on the other side that can interpret the messages coming through.
https://www.loc.gov/collection/samuel-morse-papers/articles-and-essays/invention-of-the-telegraph/ -
Telephone
American Alexander Graham Bell created the first telephone using wood as the base, iron as the vibrating diaphram that allowed for sound to be transmitted, brass wires, and mica as an insulator.
http://www.americaslibrary.gov/jb/recon/jb_recon_telephone_1.html -
Photophone
Bell also made an improvement to the telephone: making it wireless. The sound was transmitted through beams of light rather than through electrical wires, thus creating a young invention of the wireless telephones that we use today.
http://www.carnetdevol.org/Bell/Phone.html -
Rotary
Allowed for users to talk and listen on one unit that is handheld to the ear and mouth, making it easier to communicate comfortably.
http://www.cybertelecom.org/notes/telephone.html -
Motorola DynaTAC
This was the first mobile phone available to customers commercially. It was very pricey and also heavy, however, but it still was a mobile push-button device that could communicate over long distances extremely quickly.
http://content.time.com/time/specials/packages/article/0,28804,2023689_2023708_2023656,00.html -
BlackBerry
It is extremely light and small; easy for travel. It also has the ability to send and receive email, which is made easier with a screen and a physical keyboard.
http://bgr.com/2013/12/13/telephone-timeline-a-brief-history-of-the-phone/ -
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Iphone
This new innovation is much lighter and thinner than of previous phones, but it also has the most functionality than of other types of this product. It has a glass touch-screen with a display that can be manipulated by tapping different icons to change tasks. It also has the ability to call, text, and stream images in almost- real time so that people are able to communicate face-to-face without actually being in each other's presence. These are seen on a regular basis in our world today.
