First telegraph message, Samuel Morse, 1844: “What hath God wrought?”
First telephone call, Alexander Graham Bell, 1876: “Mr. Watson, come here; I want you.”
First internet message, Charley Kline, 1969: “L-O-G-I-N”
First email message, Ray Tomlinson, 1971: “QWERTYUIOP”
First cell phone call, Martin Cooper, 1973: “Guess who this is, you sorry sonofabitch?”
Source: Lee Rainie and Barry Wellman, Networked: The New Social Operating System (Cambridge, MA: MIT Press, 2012)