WhatsApp is globally rolling out dark mode for Android and iOS users after more than a month of beta testing. The Facebook-owned company says that dark mode is designed to lower eye strain in low light environments. While iOS users get to experience a pure black theme, Android users have to be content with a dark grey environment.
https://www.notebookcheck.net/Hello-Darkness-WhatsApp-dark-mode-now-rolling-out-globally-to-Android-and-iOS-users.455329.0.html