Instructions apply to iOS and Android.

Close Facebook by swiping it off the screen.

Open Facebook and tap themenubutton (your profile picture).

The Dark Mode option turned for the Facebook app on Android

Go toSettings & privacy>Dark mode.

TapOnto switch Facebook to dark mode.

Tap thesystemoption from this screen to make Facebook match whatever mode your phone is in.

For example, if you’veturned on dark mode for Android, this will make Facebook dark, too.

Why Is Facebook Dark Mode Not Working?

First, click your profile picture in the upper-right corner.

Then, go toSettings & privacy>options>Accessibility>View(next toDisplay).

Select theOffbutton, then chooseOntoturn on Facebook’s dark mode.