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 ...

"Mobile phones" became familiar products that everyone gets, and people who own multiple units by the appearance of smartphones became commonplace as unusual. The world's first call with such a mobile ...

On April 3, 1973 Martin Cooper of Motorola made the first ever call on the first ever truly portable telephone. But it wasn't until ten years later, in 1983, that Motorola sold its cellular phones ...