From the Home screen, tap Settings.
From the Settings app, tap Battery.
Tap Battery Health.
From this screen, you can view your battery's peak performance capability and relative capacity to when it was new.
Tap Battery in the top left corner to return screens.
From the BATTERY USAGE section, you can view details about how your battery power is being used.
Tap Charging.
Tap Battery in the top left corner to return.
Tap or slide the Low Power Mode switch to ON.
You've completed the steps!
