HTC Merge User Manual page 239

Camera 9
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.