With just a few taps, you can make reading in the dark a whole lot easier on your eyes (and save your battery, too). Instead of turning down the brightness, you can invert the colours on your iPhone screen so text is displayed in white on a black background. Here’s how:
1. Tap Settings, then General and then Accessibility.
2. Tap Triple-click Home (this is to assign a function that will happen when you triple click the home button.
3. Tap Toggle White on Black.
4. Now, triple-click the home button and see the coolness.