![Battery Saving Tips - The iPhone Book: Covers iPhone 4S, iPhone 4, and iPhone 3GS, Fifth Edition [Book]](https://www.oreilly.com/api/v2/epubs/9780133016529/files/graphics/16fig15.jpg "Battery Saving Tips - The iPhone Book: Covers iPhone 4S, iPhone 4, and iPhone 3GS, Fifth Edition [Book]")
Battery Saving Tips - The iPhone Book: Covers iPhone 4S, iPhone 4, and iPhone 3GS, Fifth Edition [Book]
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Apple iPhone 4S battery test is complete, here go the results [TEST]
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![More Battery Saving Tips - The iPhone Book: Covers iPhone 4S, iPhone 4, and iPhone 3GS, Fifth Edition [Book]](https://www.oreilly.com/api/v2/epubs/9780133016529/files/graphics/16fig16.jpg "More Battery Saving Tips - The iPhone Book: Covers iPhone 4S, iPhone 4, and iPhone 3GS, Fifth Edition [Book]")
More Battery Saving Tips - The iPhone Book: Covers iPhone 4S, iPhone 4, and iPhone 3GS, Fifth Edition [Book]
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