A smartphone or tablet's low battery warning is the only warning that most people take seriously. A dead battery doesn't have to happen to you. Turning off a few features and changing some settings can give your gadget's battery life a dramatic boost, according to USA TODAY.
1. Let there be (less) light
One of the biggest battery drains is your gadget's screen, especially for larger smartphones. The longer the screen is on and the brighter it is, the faster your battery goes. That makes sense. Something has to power those pixels.
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