NEW YORK -- A cell phone was first used exactly 40 years ago.

On April 3, 1973, the first handheld portable telephone was demonstrated for reporters by Motorola executive Martin Cooper (pictured) on a New York City street corner.

Cooper contacted Joel S. Engel, of Bell Labs, using a Motorola device that looked like a small, domesticated version of military walkie-talkies, according to an Associated Press report at the time.

The device weighed just under three pounds. The iPhone 5 weighs just under 4 ounces.

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