Last year Apple promised an extra hour of iPhone battery life with iOS 9, and we are hoping that Apple is able to deliver new efficiencies that help the iPhone last longer.
The last time around Apple was able to use sensors to keep the display off when in your pocket or face down on a table, and to make the iOS system more efficient overall. Our hope is that Apple can continue to add efficiencies to the iPhone that push the battery life out an additional hour. Making calls and FaceTime audio calls drain the iPhone battery fast, so perhaps there are some efficiencies there.
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