iOS tip: 10 easy ways to boost your iPhone battery life - here's the thing
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45+ tips to save battery on iPhone
Apple iPhone 4S - Battery life - AT&T
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![Apple iPhone 4S battery test is complete, here go the results [TEST]](http://cdn.gsmarena.com/pics/11/11/iphone-4s-battery-life/gsmarena_002.jpg "Apple iPhone 4S battery test is complete, here go the results [TEST]")
Apple iPhone 4S battery test is complete, here go the results [TEST]
Homemade iPhone 4s battery from a 18650 : r/techsupportmacgyver
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Don't Run Out of Juice: How to Save Battery Life on Your iPhone | PCMag
45+ tips to save battery on iPhone
