-
On November 26, 1876, Alexander Graham Bell invented the first telephone. It was made of iron, wood,brass, and mica. The first words said on a telephone were by Graham Bell saying "Mr.Watson, come here. I want you." http://www.cbsnews.com/news/evolution-of-the-phone-from-the-first-call-to-the-next-frontier/ http://americanhistory.si.edu/collections/search/object/nmah_704159/
-
The first rotary phone was invented in 1904, but was not really used by any one until 1919. The first patent for it was made in 1896. The improvement add a dial that allowed you to call a specific person. The improvement was almost needed to help people call others. Phones befor then did not have a dial, so you could not call a specific person. http://www.visionlaunch.com/when-was-the-rotary-phone-invented/
-
The touch tone phone was invented to replace the rotary phone. Instead of having a rotary, it had buttons. This made it a lot easier and quicker to call someone. http://www.cbsnews.com/news/evolution-of-the-phone-from-the-first-call-to-the-next-frontier/
https://en.wikipedia.org/wiki/Push-button_telephone -
On April 3, 1973, the first cellphone was invented. The improvement made was that the phone did not need a wire to make a call and could make a call from any position in the world. This made life much easier for everyone because if you had to make a call outside you house or office, you had to find a phone booth. But with a cellphone, you would not need to go through any of that. http://www.theatlantic.com/technology/archive/2013/04/the-first-mobile-phone-call-was-made-40-years-ago-today/2746
-
The first smartphone was made on June 29, 2007. The smartphone took away the buttons and replaced them with a touchscreen. Smartphones can also act like a computer, allowing you to do many other things than just call and text people. This allowed people to do many things, such as reader has something or play a game, on their phone. https://en.m.wikipedia.org/wiki/IPhone
