While my sister was using the "Stool Scanner" app, it froze "scanning" her finger. I was unable to exit or force close the app, so I hit the power button and turned off the phone. When the phone powered back up, I noticed that haptic feedback (the vibration you get when you touch the screen) was no longer working. It was still checked in Settings, so I tried un-checking, exiting settings, and then re-checking it. I even tried removing the battery. As a last resort, I factory-reset the phone under privacy settings. Still no haptic feedback... Oddly enough, the row of capacitive buttons beneath the screen still vibrate. Also, when typing, the virtual keyboard still vibrates. But nothing else will vibrate, including any part of the Home screen or within any other app (ie: clicking a link in the browser). Any suggestions/help would be greatly appreciated!