One of the well known messaging app – WhatsApp has finally bringing the good ol Dark mode into its iOS & Android app. It is officially announced on Twitter today!
— WhatsApp Inc. (@WhatsApp) March 3, 2020
For Android 10 & iOS 13 users, you can directly activate in the main system menu. For those who are lower, you can now activate it by going through Settings > Chat > Theme > Dark. The updated Android version is 2.20.67 while the iOS is at 2.20.30