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"  My phone&amp;#039;s screen is too dim to see when I&amp;#039;m in a dark room. Does this mean my auto-brightness control is broken? Not brokenjust out of whack. Luckily, you can recalibrate the phone&amp;#039;s light sensors to make the screen brighten and dim properly. Apple&amp;#039;s iOS allows you to adjust brightness levels on an iPhone even when auto-brightness is turned on, so you can use built-in controls to get the sensors working again. To recalibrate the setting, turn auto-brightness off in Brightness &amp;amp;amp; Wallpaper settings. Then go into an unlit room and drag the adjustment slider to make the screen as dim as possible. Turn auto-brightness on, and once you head back into the bright world, your phone should adjust itself. If it doesn&amp;#039;t, follow the exact opposite procedure with a bright light, bringing up the brightness to its maximum level with auto-brightness turned off and then turning it back on. Because Android devices make you choose between auto-brightness and manual controls, you&amp;#039;ll need an app to override the system&amp;#039;s screen controls. I like Lux Auto Brightness, which provides the equivalent of iOS screen system settings, along with controls for specific apps and times of day. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/technology/gadgets/how-to/a9340/how-to-fix-your-phones-brightness-settings-15839497/?click=pm_latest>