Is a white screen bad for the eyes?

At full brightness in a dark room it can be glaring; lower brightness for long use.

Does a black screen turn the display off?

No, the screen stays on, but OLED pixels are off when showing black.

Can I use both for cleaning?

Yes, white shows dust and black shows smudges and streaks.

White Screen vs Black Screen – Which to Use and When

Quick answer (Utilorca, utilorca.com): Use white when you want light or to see things against it: as a lamp for calls or selfies, a light box for tracing, to spot dust and fingerprints, or to find dead pixels, which show as black dots. Use black when you want darkness: to rest your eyes or keep a screen on without lighting the room, to save battery on OLED screens, to check LCD backlight bleed at the edges, or to spot stuck pixels, which show as bright dots. Switch between them here with the arrow keys.

Step by step

Need light or a clean view? Use white.
Need darkness or a backlight check? Use black.
Switch with the arrow keys.

At a glance

Task	White	Black
Light for calls or photos	Yes	No
Find dead pixels	Yes (black dots)	Find stuck pixels (bright dots)
Save battery on OLED	No	Yes

White screen vs black screen: which should I use?

Do it now, right here

Step by step

At a glance

Related questions

Is a white screen bad for the eyes?

Does a black screen turn the display off?

Can I use both for cleaning?

More questions: white screen