Settings –> Accessibility –> Display & Text Size –> Color Filters.Simply go to the Color Filters menu buried in Settings to try out the hidden feature. Recommended on Amazon: HQRP 9 LEDs Pocket Red Light Flashlight for Viewing Star Maps, Nighttime Activities.And as a reader pointed out, many animals have a hard time seeing red, so a red filter will let you use your iPhone or iPad while hunting at night. You could even use your iPhone's screen as a makeshift red-lens flashlight for red-light readable paper maps, which are common in the military. Additionally, when you look away from the red screen, your eyes adapt much more quickly to the darkness around you.Īpple's hidden Color Tint feature could be helpful for using star map apps for amateur astronomy, sneaking a quick peek at your iPhone in a movie theater, or just checking your device when you wake up in the middle of the night. That means you can look at a red screen in a dark room, and your dilated pupils won't have to adjust as much to the light. Red light is more challenging to see than other light frequencies, so it tricks our eyes into thinking it's less bright than it really is. Don't Miss: 11 Hidden iOS Features You Won't Find in Any Apple DocsĬolor Tint, the feature discussed below, overlays your entire screen with a colored filter, such as a pure red filter, which has its own benefits.

Dark Mode switches all the bright whites to black or dark gray colors, putting less stress on your eyes. The brightness slider, Reduce White Point, and Zoom's Low Light Filter all dim the display, but Night Shift cancels out blue light frequencies, resulting in an orange hue that can help you get to sleep more easily (though that is up for debate). But there's another option on iOS and iPadOS that turns your entire display red, and it's useful for so much more than just late-night browsing in bed. Night Shift, Dark Mode, Reduce White Point, and Zoom's Low Light Filter all help reduce the harmful effects on your body's clock that bright iPhone and iPad screens have at night.

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