marty cooper was born in chicago on the eve of the great depression.an age for many when the most strenuous exercise of the day is getting in and out of bed. >> his tennis and his skiing are better than they've ever been. >> i have a hard time keeping up with him, and i'm almost 20 years younger. >> [grunts] >> with his wife, arlene, another veteran of the mobile phone business, marty cooper is still in the game, awaiting the next big thing in wireless communication. he's convinced that the cell phone is still in its infancy. >> technology has to be invisible, transparent, just simple. a modern cell phone, in general, has a instruction book that's bigger and heavier than the cell phone. that's not right. >> call it the complexity or confusion factor. >> you can use this device to connect up to five different computers or wi-fi-capable devices at one time. really cool. it's the future. welcome to the 21st century. >> cooper argues that cell phones designed to do everything--take pictures, play music and videos, surf the web-- don't do any of them really