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How to use the blue light filter on the Galaxy S8

Galaxy S8 quick settings
Galaxy S8 quick settings (Image credit: Android Central)

There's a big trend in consumer electronics relating to reducing the amount of blue light we're exposed to at night, and Samsung does its part on the Galaxy S8 and S8+ with its "blue light filter." The feature tints the screen to a reddish glow in an attempt to help you transition to sleeping at night, and it offers a few settings so you can make the effect as strong or weak as you like.

How to turn on and configure the blue light filter

  1. Open the Settings on your phone.
  2. Scroll down and tap on Display.
  3. You'll see there are two main choices here: when to turn on the light filter, and what the opacity is.
  4. Tap on Turn on now to see what the blue light filter looks like.
  5. Using the Opacity slider at the top, adjust how strong the filter should be when it turns on. You can then turn off the blue light filter to adjust the other settings.
  6. Most people will prefer the ease of letting the filter turn on at your local sunset time and turn off at local sunrise.
  7. If you select Custom schedule, set the starting and ending hours manually.
  8. The Blue light filter will now turn on automatically each day.

With a little bit of tweaking, the Galaxy S8's blue light filter is a nice little tool that will help with your eye strain late at night and early in the morning. Best of all, once it's set up it'll just adjust automatically and you don't have to do any other configuration.

Andrew was an Executive Editor, U.S. at Android Central between 2012 and 2020.

9 Comments
  • Instructions unclear, ear has fallen off.
  • How effective is this compared to Twilight? Joe
  • Works much better than any of the non-root variations. They all can only add a red layer on top of the screen. They don't cut back on blue, they just add red. I've tried them all. You can tell because blacks get reddish. What the Samsung and root app ones do is tweak the color look up table CLUT or similar to just minimize or turn off the blue channel. What's funny is that you get used to it after a few minutes and don't even notice.
  • This is true
  • I like it, i have mine set to automatically come on from sunset to sunrise. It was one of the features i liked about my note7. I havent adjusted it at all, its on the default setting for how much it changes the screen.
  • Filter has stopped me from catching heat at night from my wife. Very good addition.
  • I used to get really bad eye strain with Amoled screens when viewing for more than half an hour. Doesn't happen at all with IPS displays but I do miss the vividness of an Amoled display. I'm glad they have something to remedy the situation when I go back!
  • The S7 edge had this too. I think it came in the nougat update but it's been there for a bit
  • Yes use it blue light filters to save your eyes and work fine on gs8 nd yes ips display has that when I using LG g3 and had high amount blue light show up during the night. Horrible for my eyes and everyone else.