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"phone" redirects here. for other uses, see phone (disambiguation) . for the handheld personal computer, see smartphone . a rotary dial telephone, c. s at&t push button telephone made by western electric , model dmg black, a telephone (derived from the greek : τῆλε, tēle, "far" and φωνή, phōnē,
"voice", together meaning "distant voice"), or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. a telephone converts sound, typically and most efficiently the human voice , into electronic signals that are...
https://en.wikipedia.org/wiki/Telephone