CLDeviceOrientation.faceDown The device is held parallel to the ground with the screen facing downwards. Declarationcase faceDown See AlsoDevice OrientationsCLDeviceOrientation.unknownCLDeviceOrientation.portraitCLDeviceOrientation.portraitUpsideDownCLDeviceOrientation.landscapeLeftCLDeviceOrientation.landscapeRightCLDeviceOrientation.faceUp