How do you get your iPhone on dark mode?

Tap on Settings.
Find and tap on “Display & Brightness”.
Now tap on the “Dark” checkbox.
Done.

Open Control Center.
Tap and long press “screen brightness slider” to make it look bigger.
Tap the “Appearance Dark” button and tap it to turn it on.
Done

Automatically Turn Dark Mode On and Off can be done by the following steps:
Tap on “Settings”.
Find and tap on “Display & Brightness”.
Find and tap on the Automatic slider to make it green.
Now tap on the “Options” to select the time.
You can choose between “Sunset to Sunrise” and “Custome Schedule”.
The ” Sunset to Sunrise” option will use your local time zone.
By using the “Custom Schedule” option you can fix your own time for the On/Off of this dark mode.

The dark mode is better for your eyes and it is one of the most in-demand features of 2019. While improving the readability of the text this puts less strain on your eyes.

Apart from reducing eye strain by minimizing blue light, it enables the screen to adjust according to the current light. In a low light environment, this dark mode is awesome. Also, the dark mode on iOS saves energy and improves battery life.

Nothing extra to be done for changing the color of your Imessages. By turning on the darkmode your messages on iPhone will be shown in darkmode along with the other apps like Safari, mail, etc.

The standard font on your iPhone i.e. Helvetica will change it’s color from Black to White when you turn on the dark mode. The white translucent layers are replaced with black translucent layers.

The iPhone 6 doesn’t have a dark mode. The dark mode is only available for iOS13. Till now iOS 13 is not supporting iPhone6. However, there are some ways you can get it – Check this.