Hello world, there is a way to dimming the backlight quickly: 1. Settings -> General -> Accessibility -> Zoom -> Enable Zoom. Tap the screen with three fingers thrice. Press 'Choose Filter' > 'Low Light', Chose Zoom Region to "Full Screen Zoom". 2. Settings -> General -> Accessibility -> Accessibility Shortcut (It's on the bottom) -> Set to "Zoom" After that, if you click the home button triple, you can dimm the screen quickly!