Turn on Dark Mode On your iPhone or iPad, navigate to Settings > Display & Brightness and tap the Dark theme under the Appearance section.This will automatically change the theme for built-in apps ...

so developers have incorporated dark themes in apps, browsers, and operating systems. If you have an iPhone or iPad, you can turn on system-wide dark mode rather than activating it app by app.

The process to enable dark mode for app icons on the iPhone’s Home Screen is straightforward. – Long press an empty space on the Home Screen of the iPhone till the app icons begin to jiggle.