Cell phones, also known as mobile phones, were first manufactured in 1973 by Martin Cooper of Motorola. In 1977, AT&T presented them to 2,000 Chicago customers, but it was 20 years before they were broadly marketed to the average consumer. The ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles