202.2 Key2.2.1 ButtonButton DescriptionScanner Operate scanner while executing scanner program.Volume High Increase volume.Volume Low Decrease volume.Camera Take pictures while executing camera program.Back Return to previous stage.Home Go to Home screen.Menu Display menu.Function Execute the work set to the button.2.3 Home ScreenIf the device is turned on, the following screen will be displayed. The screen is dividedinto four sections as follows: Status Bar Home Screen Dock BarNotification Bar
