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Apple Introduces iPhone 5

SAN FRANCISCO, CA - SEPTEMBER 12: Apple CEO Tim Cook speaks during an Apple special event at the Yerba Buena Center for the Arts on September 12, 2012 in San Francisco, California. Apple is expected to announce the iPhone 5, the latest version of the popular smart phone. (Photo by Justin Sullivan/Getty Images)

Apple reveals iPhone 5 at San Francisco keynote

Apple has introduced the keenly anticipated iPhone 5, a complete redesign of its hit smartphone.The new model is thinner and lighter than any of it previous models.