Telephone is a method of telecommunication in which sound waves of a voice is transmitted through electric current or wave to a distant place and transmits the current or wave back into a voice. This allowed people to vocally communicate to a distant place. The first utility telephone was invented in the U.S. by Alexander Graham Bell. Bell had his theoretic success in invention in 1874, and had his first experimental success on March 10, 1876. Nowadays, telephones have become an essential part of everyday living and almost every person owns a mobile phone.