I don't have fat fingers, but, I have to fight to get my Pinky finger in there to turn the vibrate on or off

Only thing to keep it from being a 5 is the mute switch is a little hard to get to with my fat fingers

the mute slider is exposed but due to the thickness of the case is a little difficult to reach if you have fat fingers

the lock button was extremely hard to push and hurt my fingers after pushing it only 2 times