As Apple prepares to unveil what is expected to be the fifth edition of the iPhone on Tuesday, we look at celebrities who swear by the smartphone. Here's Ashton Kutcher using the phone in happier times with Demi Moore
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'The Amazing Spider-Man' actor Andrew Garfield takes a photo with his iPhone
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Sexy Jessica Alba is all smiles as she uses her iPhone
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'21 Jump Street' star Channing Tatum also uses a red cased iPhone
