Flashback: iOS 4 adds multitasking, FaceTime and other important features - GSMArena.com news
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iOS 6 Features
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multifl0w - an iPhone multitasking interface
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Wired.com Explains: How Mobile Multitasking Works | WIRED
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Auxo, un interessante tweak che ringiovanisce il Multitasking di iOS - Cydia - iPhone Italia
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Hands-on with iOS 4 (photos) - CNET
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How to Use Multitasking on the iPhone
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