In 1954 Motorola Dr. Martin Cooper was hired by Motorola, where he worked extensively on portable wireless products, such as police radios and eventually the first cellular telephone. Although Bell laboratories introduced the idea of a cellular communication device in 1947, it was not until April 3, 1973 Dr. Cooper was able to publically demonstration his creation of the first cellular telephone. Dr. Cooper’s invention jumpstarted a movement of communication directed toward the individual, rather than the home or a specific place.
For other milestones in wireless telephone communication, see:
Source: Gareth Marples, “The History of Cell Phones,” TheHistoryOf.net, http://www.thehistoryof.net/history-of-cell-phones.html (accessed October 17, 2011).
Image Source: “The Evolution of Cell Phones,” http://uhaweb.hartford.edu/kgreenber/lpage02.html (accessed September 18, 2011).