Motorola, Inc. was founded on September 25, 1928, based in Schaumburg, IIIinois. Motorola designed and sold wireless network equipment such as cellular transmission base stations and signal amplifiers. Motorola's home and broadcast network products included set-top boxes, digital video recorders, and network equipment used to enable video broadcasting, computer telephony, and high – definition television.
The company demerged into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011. Motorola Mobility was sold to Google in 2012, and acquired by Lenovo in 2014. Motorola Inc. was renamed Motorola Solutions and is legally the direct successor to the original company after the demerger from Motorola Mobility.
Martin "Marty" Cooper was born on December 26, 1928, is an American engineer. He is a pioneer in the wireless communications industry, especially in radio spectrum management, with eleven patents in the field. On April 3, 1973, Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival.
While at Motorola in the 1970s, Cooper invented the first handheld cellular mobile phone (distinct from the car phone) in 1973 and led the team that developed it and brought it to market in 1983. He is considered the "father of the (handheld) cell phone" and is also cited as the first person in history to make a handheld cellular phone call in public.
Top management at Motorola supported Cooper's mobile phone concept, investing $100 million between 1973 and 1993 before any revenues were realized. Cooper assembled a team that designed and assembled a product in less than 90 days. That original handset, called the DynaTAC 8000x (DYNamic Adaptive Total Area Coverage) weighed 2.5 pounds (1.1 kg), measured 10 inches (25 cm) long and was dubbed "the brick" or "the shoe" phone. A very substantial part of the DynaTAC was the battery which weighed four to five times more than a modern cell phone. The phone had only 30 minutes of talk time before requiring a 10-hour recharge. By 1983 and after four iterations, the handset was reduced to half its original weight.
According to en.wikipedia.org