Option 1: Go to Settings> Display, and toggle on the Dark Theme icon.
Option 2: Swipe down from the top of the phone to access the notification status bar. Then swipe down again to access the Control Centre, and toggle on the Dark Theme icon.
Option 1: Go to Settings> Display, and toggle on the Dark Theme icon.
Option 2: Swipe down from the top of the phone to access the notification status bar. Then swipe down again to access the Control Centre, and toggle on the Dark Theme icon.