HTC Aria User Manual page 157

Camera 157
Shutter sound
Select or clear this check box, depending on whether you want the camera to play a
shutter sound when you press the shutter release.
Time stamp (photo mode only)
Select this check box when you want the date and time to be added on captured photos.
Grid (photo mode only)
Select this check box when you want to display a grid on the Viewfinder screen so you
can easily frame and center your subject before taking the photo.
Reset to default
Tap to change the camera back to default settings.