On April 3, 1973, Martin Cooper (birthday today), who invented something called a cell phone for Motorola, made the very first public cell phone call standing outside the Hilton New York (1335 6th Ave) to Burlington House (1345 6th Ave) nearby.
The first cell phone was called DynaTAC 8000x. It had only 20 minutes of talk time and then needed a 10-hour re-charge. That wasn't a problem as most people could not hold the 2.2-pound phone for 20 minutes. The battery for "the Brick" was extremely heavy.
Martin Cooper led a 10-year effort to bring the cell phone to market. But it took much longer to commercialize it.
Motorola would invest $100 million from 1973-1993 before realizing revenues.
The Father of the Cell Phone married the First Lady of Wireless Arlene Harris who created something that would become known as a Prepaid Cellphone.