Sys.getDeviceSettings().tonesOn and Sys.getDeviceSettings().vibrateOn

Hi,

I'm checking Sys.getDeviceSettings().tonesOn and Sys.getDeviceSettings().vibrateOn and displaying with a grey or green indicator if they are true or false.

Works in the simulator perfectly but on a 920XT it always seems to return false even if the tones and vibrate is on.

Is this a bug in the firmware?!

Thanks.