Can you hear me now? Cellphone turns 40

Forty years ago, Martin Cooper, a VP at Motorola, made history by placing the very first cellphone call. Appropriately enough, he called his rival at AT&T's Bell Labs.

Thirty-three years later, a slightly more theatrical Steve Jobs dialed a Starbucks cafe in San Francisco to order 4,000 lattes, making the first public phone call from the very first iPhone while a hushed auditorium filled with journalists watched.

In between those prank calls, the cellphone morphed from a chunky plastic giant to a slender glass slab that doubles up as a computer and camera.

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