How to enable dark mode in Facebook app ?

Please follow below steps to enable dark mode in Facebook app :-

1) Open Facebook app.

2) Tap on main menu.

3)Tap on settings & privacy.

4) Tap on settings option.

5) Now scroll down, go to preferences section and tap on dark mode option.

6) In dark mode section, tap on on option.

  So, in this way we can enable dark mode on Facebook app.