PowerBell PowerBell Mobile phone power change ringtone alert app. This application has crashed, the author level is limited, please understand! Main View About Battery Reporter Clear Record Change Picture Developer View Log View Clean Log Source View Message master switch Send a remind ringtone, when power is lower than left (usage state) or higher than right (charged state). Slide Right To Clean Up APP Record. Clean Record Background Picture About The APP >>>Seek 100% To Clear Battery Record.>>>