Here’s how you can modify your Sleep screen:
Navigate to the Sleep screen settings
Open Settings → General → Display → Sleep screen to access the personalization options.
Open the selection menu
Tap on the currently displayed sleep screen. A pop-up will appear, showcasing the available artistic Sleep screens.
Choose your preferred Sleep screen
Scroll through the selection and tap on the illustration you’d like to set as your new Sleep screen.
Confirm or cancel your selection
Turn sleep screen shuffle on or off
Please note that if sleep screen shuffle is toggled on, your device shuffles through available visuals whenever you lock your device. If you would like to keep your chosen sleep screen visual, simply uncheck the box on the right.
View the new Sleep screen
Once applied, your selected Sleep screen will appear whenever your device locks or enters sleep mode.