History of mobile phones
A cellular telephone switching plan was described by Fluhr and Nussbaum in 1973, and a cellular telephone data signaling system was described in 1977 by Hachenburg et al.
History of videotelephony
Barely two years after the telephone was first patented in the United States in 1876 by Dr. Alexander Graham Bell, an early concept of a combined videophone and wide-screen television called a "telephonoscope" was conceptualized in the popular periodicals of the day. It was also mentioned in various early science fiction works such as "Le Vingtième siècle. La vie électrique" (The 20th century. The electrical life) and other works written by Albert Robida, and was also sketched in various cartoons by George du Maurier as a fictional invention of Thomas Edison. One such sketch was published on December 9, 1878 in "Punch" magazine.