How to turn off blue light on your iPhone with Night Shift, and make it easier to fall asleep at night

iStockYou should turn off the blue light on your iPhone before you go to sleep.

  • You can turn off blue light on your iPhone by activating “Night Shift,” which changes the colour of your iPhone’s display.
  • Night Shift is designed to limit the amount of blue light your iPhone gives off, which can be helpful when you’re trying to fall asleep.
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We all know that our iPhones can keep us awake at night – that “one last YouTube video” can turn into an hour-long marathon that gets us into bed way too late. But that’s not all that’s keeping us up.

Research has shown that blue light, which your iPhone’s screen gives off nearly constantly, can have adverse effects on our bodies. Blue light disrupts your body’s melatonin production, which is the chemical in your brain that helps you feel sleepy.

While some would advocate for cutting out screen time at night altogether, an alternative to that is to make it so that your iPhone display doesn’t give off as much blue light.

Here’s how to turn off blue light on your iPhone, either on a day and night timer, or all the time.

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How to turn off the blue light on an iPhone with Night Shift

1. Open the Settings app.

2. Scroll down and tap “Display and Brightness,” the third item on the third list of options.

How to turn off blue light on your iPhone   1Melanie Weir/Business InsiderOpen the ‘Display & Brightness’ menu.

3. Scroll down and tap “Night Shift.”

How to turn off blue light on your iPhone   2Melanie Weir/Business InsiderTap to open the ‘Night Shift’ menu.

4. From here, you have two options.

  • Tap “Manually Enable Until Tomorrow” to toggle the blue light filter to on until sunrise tomorrow morning.
  • Option two: Tap the toggle switch next to “Scheduled” to turn it on. If you like the schedule that’s set automatically, which is from sunset to sunrise, leave it be. If not, tap it again and proceed to Step 5.
Melanie Weir/Business InsiderSelect either ‘Manually Enable Until Tomorrow’ or ‘Schedule.’

5. Tap the “From/To” tab to take yourself to the scheduling screen. If you want your phone to turn Night Shift on and off at the same times every day, set those parameters here.

Melanie Weir/Business InsiderAdjust your phone’s blue light schedule to fit your own.

6. Finally, if you’d like, return to the Night Shift menu and adjust your Night Shift colouring to your liking, from “Less Warm” to “More Warm.” The warmer your screen, the less blue light it gives off.

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