But it is not yet available to everyone.
Facebook is gradually introducing a dark theme to all of its apps. This mode is already in WhatsApp, Instagram, Facebook Messenger, and the desktop version of Facebook, but now it’s finally reached the mobile application. So far, a dark theme is available for a small number of users of the Facebook client on iOS devices, but they have already begun sharing the corresponding screenshots on Twitter.
The Facebook mobile app finally got a dark theme
At the moment, nothing is said about when the dark theme will become available to all users of iOS devices, and it is also unclear when it will appear on Android. But Facebook is known for not rushing to quickly introduce dark mode.