We already knew you could zoom in and out and flip from homescreen to homescreen by moving the phone on the new Samsung Galaxy S II, but we didn’t know there were two more motion-based gestures added into the mix. One simply allows you to silence an incoming call but putting your phone face down – this sort of thing is already possible on other phones through the use of Android market apps. Another allows you to double tap the top of your phone while in car mode to active voice actions, an accessibility feature that should make it even easier and safer to use your phone while your hands should be on the wheel. Check the quick video out above, courtesy of Samsung Hub.