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iPhone 4 Battery Life (Real-World Tests): EveryiPhone.com
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![iPhone 4 vs. iPhone 4S Specs Showdown - Fight! [Comparison Chart] | Cult of Mac](https://www.cultofmac.com/wp-content/uploads/2011/10/iphone-4s-numbers-5.jpg "iPhone 4 vs. iPhone 4S Specs Showdown - Fight! [Comparison Chart] | Cult of Mac")
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iPhone 4S Battery Life (Real-World Tests): EveryiPhone.com
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