Is there a way to set up vibrate mode on the phone? When I click the volume down I get to silent mode straight away. I know you can turn vibrate on in silent mode, but then you need to go into settings to disable it if you want silent with no vibrations. On my boyfriend's Galaxy S when he clicks the volume down it goes to vibrate, and then to silent if you click down again. Is there a way to do something like that so I don't need to enable and disable vibrating in silent mode EVERY time I want to switch between them?