The application provides an option to have an audible and/or vibration sensation when a button is activated. The vibration sensation option setting is called haptic feedback.
To add haptic or audible feedback:
Go to Menu > Application Settings > System > Sound Settings.
Audible Selection provides an audible click when navigating through Chat software menus.
Haptic Feedback provides a vibration sensation to indicate screen touches on the device.
To add button clicks for vocabulary page activations:
Go to Menu > Application Settings > Input > Beep on Button Press.