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Samsung Galaxy screen turned black and white? How to fix it

By Updated 14 November 20265 min read

Devices: Galaxy S26 (One UI 9.0) and Galaxy A57 5G (One UI 8.5) · Checked November 2026

Real screenshot · Galaxy S26, One UI 9.0

In short

Open Settings, Accessibility, Vision enhancements, Color correction and switch it off, or pick a mode other than Grayscale. Then check Color filter on the same page and switch off both shortcuts. If it happens at bedtime, open Settings, Modes and Routines, Sleep and remove Grayscale from Other actions.

Well, it is a strange moment when your colourful Galaxy suddenly looks like an old black and white film, and the phone did it without asking you. Samsung says something like Bedtime, Dark mode or Visibility enhancements may have switched on by mistake or by itself. Nothing is broken.

9 of 9 steps show a real screenshot from our Galaxy S26 (One UI 9.0) and Galaxy A57 5G (One UI 8.5).

Steps

0 of 9 steps
  1. 1

    Open Vision enhancements

    Settings, Accessibility, Vision enhancements. Color correction and Color filter are further down that page.

    Android screenshot: Open Vision enhancements
  2. 2

    Tap Color correction

    It is on the Vision enhancements page, below Color inversion. Under the name ours read Off.

    Android screenshot: Tap Color correction
  3. 3

    Switch off Color correction

    The switch at the top of Color correction turns it on and off. Ours was off.

    Android screenshot: Switch off Color correction
  4. 4

    Or pick a mode other than Grayscale

    Grayscale was the last of the modes on our Galaxy A57 with One UI 8.5, below Deutan, Protan and Tritan. On our Galaxy S26 with One UI 9 we found no Grayscale mode there; on One UI 9 it is an action of Sleep mode instead (step 9). If you use Color correction on purpose, choose the mode you need.

    Android screenshot: Or pick a mode other than Grayscale
  5. 5

    Turn off the Color correction shortcut

    A shortcut can turn Color correction on with a button press. Switch it off to stop it happening again. Ours was off.

    Android screenshot: Turn off the Color correction shortcut
  6. 6

    Go back and tap Color filter

    Color filter is the row just below Color correction. Ours also read Off.

    Android screenshot: Go back and tap Color filter
  7. 7

    Switch off Color filter

    Color filter lays a colour over the whole screen. Switch it off at the top. Ours was off.

    Android screenshot: Switch off Color filter
  8. 8

    And its shortcut

    Color filter shortcut is just below. Switch it off too.

    Android screenshot: And its shortcut
  9. 9

    Check Sleep mode too

    If the screen goes grey at bedtime, Sleep mode is the likely cause. Open Settings, Modes and Routines and tap Sleep. If Grayscale is listed under Other actions, remove it. More actions for this mode is where it is added, next to Dark mode and Eye comfort shield. Digital Wellbeing, Bedtime mode opens the same Sleep page. Ours had no actions set.

    Android screenshot: Check Sleep mode too

If you do not see this option

If this does not work

  • The screen turns grey at bedtime Samsung says Bedtime mode turns the screen black and white on a schedule. Open Settings, Digital Wellbeing and parental controls, Bedtime mode and tap Turn off.
  • The screen looks grey and dim This one can be your phone saving battery. Samsung says Power saving can switch the screen to grayscale and lower the brightness. Turn Power saving off under Settings, Battery and device care, Battery.
  • Dark, not grey? Samsung lists Dark mode among the features that may have been accidentally turned on. Samsung says to switch to Light mode in Settings, Display, or tap the Dark mode icon in the Quick panel. Dark mode can also run on a schedule.
  • Settings all off but still grey? If every switch above is off and the phone is still stubbornly grey, it is not something you did wrong. Samsung suggests checking that the software and related apps are up to date. Install any update, then check again.

Good to know

If the screen goes grey only at night, open your Sleep mode and check what it changes: how to use Sleep mode on a Samsung Galaxy.

Colours too strong or too dull instead? how to change screen mode to Vivid or Natural on a Samsung Galaxy.

Samsung says Bedtime mode, which turns the screen black and white, can be switched on to rest your eyes and help you sleep better. If that's you, I like the idea; Samsung says Bedtime mode follows a schedule and switches itself off when the set time is up.

Watch these steps

Video thumbnail: Samsung Galaxy screen turned black and white? How to fix itWatch on YouTubeThe same steps, recorded on our Galaxy S26 · opens YouTube

About this guide

Device
Android
Shown on
Samsung Galaxy S26 (SM-S942N, Korean model), One UI 9.0, Android 17 (build CP2A.260605.016.S942NKSU5BZJB), Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16
App
Settings
Real screenshots
9 of 9 steps
What we did
Observed: looked at each screen, changed nothing
Checked
November 2026
Sources
1 official, linked below

The screenshots are from a Samsung Galaxy S26 with One UI 9.0 and Android 17, in Dark mode, apart from step 4, from our Galaxy A57 with One UI 8.5. Samsung says what the menus look like can depend on the model and software version.

Sources

Links checked November 2026. Menus and features can change with updates.

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