
He pioneered the cellphone, changing how people connect — and disconnect — globally
DEL MAR, Calif. — Dick Tracy got an atom-powered two-way wrist radio in 1946. Marty Cooper never forgot it. The Chicago boy became a star engineer who ran Motorola’s research and development arm when the hometown telecommunications titan was locked in a 1970s corporate battle to invent the portable phone. Cooper rejected AT&T’s wager on…