Several models followed, starting in 1985 with the 8000s and continuing with periodic updates of increasing frequency until 1993's Classic II.

Motorola had long produced mobile telephones for cars that were large and heavy and consumed too much power to allow their use without the automobile's engine running.

[8] By 1975, Motorola's expectations had changed; the Dyna-Tac was anticipated to be released to the public by 1985 because of U.S. Federal Communications Commission proceedings.

Martin Cooper was the first person to make an analog cellular mobile phone call on a prototype in 1973.

[11] On October 13, 1983, David D. Meilahn placed the first commercial wireless call on a DynaTAC from his 1983 Mercedes-Benz 380SL to Bob Barnett, former president of Ameritech Mobile Communications, who then placed a call on a DynaTAC from inside a Chrysler convertible to the grandson of Alexander Graham Bell, who was in Germany for the event.

Later, Richard H. Frenkiel, the head of system development at Bell Laboratories, said about the DynaTAC: "It was a real triumph; a great breakthrough.

The seeds of the idea for a portable cell phone can be traced to Mikulski, which were rejected by Mitchell for lack of sufficient business justifications.

The product accepted by the FCC weighed 28 ounces (790 g) and was 10 inches (25 cm) high, not including its flexible "rubber duck" whip antenna.

The 6000XL was later reconfigured as the Motorola Tough Talker, with a ruggedized build intended for construction sites, emergency workers, and special events planners.

Available, too, was a snug-fitting zippered leather case which covered the entire body of the phone and had a clear plastic front to make the user interface accessible.

It featured a sturdy spring-steel belt clip and a small cutaway at the top to allow the antenna to protrude.