John Francis Mitchell was an American electronics engineer and president and chief operating officer of Motorola.
John F. Mitchell in 1996
DynaTAC 8000X;1983, $3,995. 13" tall, weighed 30 oz. First commercial portable cell phone. Dubbed the "Boot," later, a slimmer version was called the "Brick." DynaTAC=Dynamic Adaptive Total Area Coverage. -First Patent Shown Here: -Mitchell & DynaTAC, 04/03/73
A mobile phone is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone. The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network (PSTN). Modern mobile telephone services use a cellular network architecture, and therefore mobile telephones are called cellphones in North America. In addition to telephony, digital mobile phones support a variety of other services, such as text messaging, multimedia messaging, email, Internet access, short-range wireless communications, satellite access, business applications, payments, multimedia playback and streaming, digital photography, and video games. Mobile phones offering only basic capabilities are known as feature phones ; mobile phones that offer greatly advanced computing capabilities are referred to as smartphones.
Two decades of evolution of mobile phones, from a 1992 Motorola 8900X-2 to the 2014 iPhone 6 Plus
Martin Cooper of Motorola, shown here in a 2007 reenactment, made the first publicized handheld mobile phone call on a prototype DynaTAC model on 3 April 1973.
The Motorola DynaTAC 8000X. In 1983, it became the first commercially available handheld cellular mobile phone.
Dupuis and Haug during a GSM meeting in Belgium, April 1992
