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If you’re working on your iPad late at night, the bluish light of the screen might strain your eyes and can potentially make it harder to go to sleep. Luckily, Apple includes a feature called Night Shift that tints the screen to a more warm, orange hue. Here’s how to use it.

Bright blue-white light blasting in your face at night isn’t so great for your sleep or general health, but don’t worry; iOS supports color shifting so you can warm up the light of your iPhone for easy nighttime reading.