Easy to do
Audible touch tones and haptic feedback can let you know when you're interacting with your Android device, but they can also drive you crazy. If you prefer your phone a little more still and quiet you can modify each of the following:
1. Navigate to Settings -> Sound & Display.
2. To turn off system sounds uncheck Audible Touch Tones and/or Audible Selection.
3. To reduce haptic vibration navigate to Vibration Intensity.
4. To completely turn off vibration from feedback uncheck the box next to Haptic Feedback.
Now your Android device will be quieter when you interact with it, as well as save your battery thanks to less vibration.