If you have unique accessibility needs or simply want a shortcut for quickly switching to a high-contrast theme, Android's invert colors feature is key.

For example, when you invert white you get black, blue gives orange and red gives green. The computer acts as a complementary color calculator, instantly generating an inverted screen image.

Luckily, iOS and Android 4.0 and above make it easy to invert screen colors for an instant "night mode." We've previously shared how to invert colors your desktop browser, and the trick is just as ...

With iOS 11, Apple changed up how you activate the Night Mode on your phone. The company originally introduced Night Shift in iOS 9.3 as a way to make ...