Samsung Galaxy A20e
Android 9.0
Select help topic
1. Find "Battery"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Device care.
Press Battery.
2. Extend the battery life
Press Power mode.
Press the required setting.
Press Apply to turn on the function.
3. Return to the home screen
Press the Home key to return to the home screen.