From the Home screen, swipe up to view your apps.
Swipe to Settings.
Tap Settings.
Scroll to Battery and device care.
Tap Battery and device care.
Tap Battery.
Tap Battery usage.
From this screen, you can view details about how your battery power is being used.
Select an app to view more information.
Tap the Back icon.
Tap the Back icon again.
Tap Power saving mode.
Tap or slide the Power saving mode switch to ON.
Power saving mode saves battery power by limiting access to certain apps, including the flashlight.
You've completed the steps!
