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How to Set Screen Timeout on Samsung Galaxy S9

How to Set Screen Timeout on Samsung Galaxy S9

By Mitch Bartlett 17 Comments

Set the amount of time that elapses before the Samsung Galaxy S9 times out and shuts off the screen with these steps.

Set Screen Timeout

  1. From the Home screen, select “Settings” > “Display” > “Screen timeout“.
  2. Choose one of the following:
    • 15 seconds
    • 30 seconds
    • 1 minute
    • 2 minutes
    • 5 minutes
    • 10 minutes

Enable or Disable “Smart Stay”

The Galaxy S9 has a feature that will detect if your eyes are looking at the screen. If your eyes are detected, the screen will not time out. Enable or disable this setting with these steps.

  1. From Home, select “Settings“.
  2. Choose “Display“.
  3. Set “Smart stay” to “On” or “Off” as desired.

Disable Screen Timeout

The Galaxy S9 does not have an option to completely disable the screen from timing out when the phone is not plugged in. You can however set the phone to never disable the screen when it is plugged in using these steps.

  1. Select “Settings” > “About phone“.
  2. Tap “Build number” 7 times to unlock developer mode.
  3. Now under “Settings” you have an option for “Developer options“. Under this menu, there is a “Stay awake” option.

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Filed Under: Android Tagged With: Galaxy S9

Reader Interactions

Comments

  1. Ivory Alexander says

    May 17, 2021 at 10:50 am

    I’m using a Samsung Galaxy Note 9 running Android 10 where do I find the build number because its not in the about phone section.

  2. Jamie says

    December 7, 2020 at 12:49 pm

    This is one fatal flaw about my Samsung s9, along with the lack of width in space bar making.every.sentence.look.like.a.we.page. 🙄
    The auto timeout over 30 seconds is extremely annoying and an unnecessary waste of time when trying to navigate phone while doing life. Is this on EVERY Samsung phone or just s9? If later versions don’t struggle with this I will upgrade. But, please, for the love, Samsung how is it you can’t give us an override option that will actually STICK?!? 😣

  3. Gregory A McGaw says

    December 1, 2020 at 8:57 pm

    I have an unlimited data plan so I am not worried about overage costs. I can go to “Settings, Display, Screen Timeout” and change it to 5 minutes but it reverts back to the 30 second mode within a day or two.

  4. Joseph D Lindberg says

    November 19, 2020 at 10:08 pm

    Ok i believe i have the same problem while im in a call, i need to type numbers, ex( press 1 for this!), the screen goes dim every 10 seconds, I’ve asked this ? Why, and how do I fix it, I’ve called Samsung, and t-mobile, asked for a tech and got advanced tech, in both companies even had them on the phone together, that was 6 months ago, alot of people have this problem! Almost everyone I know, and no answer, why or how to fix it! There used to be an app, i had that kept screen on but an update canceled the app! This has to be a serious issues for Samsung, or some kind of secrets being kept, employees that know why will be fired if it gets out! And the messed up thing they know this is seriously irritating, and gets people passed off, I believe they want to charge you one day, 1 or 2 dollars for every option you have on your phone, just like cable and satellite every channel!

  5. Mysterri says

    August 7, 2020 at 6:23 am

    This has been my problem for more than a year. Thanks for putting it into words. But, still no fix,? Changing phone brands seems like the best option for me.

  6. Bob Wells says

    July 13, 2020 at 2:34 am

    Hi Mitch Bartlett
    I think it may be time for a revisit on this one, on any S8 upward samsung, running android 9 one UI, the Dev mode under “stay awake” is “screen will never sleep while charging”, If you set adaptive brightness to off the phones still dim after 10 mins as per Charlie’s comment.
    The original question was how to get the screen to NEVER turn off which is what everyone here wants, and from scouring the net it looks like that is NTP (not technically possible).
    Please prove me wrong.

  7. SCOTT M CAMPBELL says

    May 17, 2020 at 2:56 pm

    Even with developer option to stay awake my phone switches back to 30 second timeout!

  8. Chris says

    May 4, 2020 at 3:42 pm

    When I go to settings/display my phone keeps saying ” Settings has Stopped ” close app. It won’t let me adjust my lkenght if time, it won’t allow me into the area at all

  9. Laurie says

    May 2, 2020 at 12:30 pm

    I followed the instruction to disable screen timeout, but the description when in developer mode under “stay awake” is “screen will never sleep while charging”…I want to disable timeout when I’m using the phone, not when I’m charging the phone…what now?
    Thanks

  10. Samuel Peterson says

    December 7, 2019 at 11:53 am

    Can’t turn off screen timeout?
    Welp, guess it’s jailbreak-time! Thanks for the great product Samsung!

  11. PH4S1N says

    December 7, 2019 at 1:29 am

    It work when i charging but when i not charging it back to normal setting screen timeout

  12. julia ramos says

    October 12, 2019 at 3:42 pm

    i cant set it so while im on phone the screen goes black. im doing work on phone that requires screen when in on phone. how do i fix it

  13. JD says

    August 21, 2019 at 10:46 am

    My phone will not time out at the chosen 30sec time. It takes forever.

  14. Kyrie says

    June 17, 2019 at 8:31 am

    Even if I set my screen to timeout after 10min. every morning I have to re-set this because it seems overnight it’ll “reset” itself to turn off after 30sec.

  15. David South says

    June 4, 2019 at 1:32 am

    Download no screen off from play store
    This will disable screen time out,

  16. Mitch Bartlett says

    April 22, 2019 at 9:58 am

    You may have Adaptive Brightness turned on. You’ll want to turn that off.

  17. Charlie Warren says

    April 21, 2019 at 5:35 pm

    The Phone is Still Dimming… When I Get a Phone Call, but at Least It’s Not Black.

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