NEW YORK CITY -- On April 3, 1973, Martin Cooper stood on a sidewalk on sixth avenue in Manhattan with a device the size of a brick and made the first public call from a cell phone to one of the men ...

Dick Tracy got an atom-powered two-way wrist radio in 1946. Marty Cooper never forgot it.

While you might think it's hard waiting for a text back, imagine a world without cellphones. Some people don't have to because they remember it. It was a time when getting ahold of someone involved ...