Flyingkite 的電池 App

Battery information notification bar, wave the switch screen, click the button to switch the vibration volume

In order to reach the wave, you can "close" the screen. "This app requires device administrator privileges."

You can find the settings for this app in Settings > Security > Device Manager.

If you just want to check the battery's temperature, battery, voltage, wave "on" the screen

It is not necessary to use device administrator privileges.