After having my Note 2 for exactly 2 weeks, Power Button has died. There is no "spring" or "click" when pressing the button and no response. The only way I get can the unit to power on/off is to press the button with extreme force. I went back to the store and was lucky to get the defective unit exchanged. The replacement unit I got is not that great either. I use the vibrate function on all notifications. When the vibration is set greater than 75% maximum, there is a funny noise that it makes. There is definitely something loose. I have turned the vibration down to 50% where I don't hear the vibration. Is anyone else experiencing or experienced the same problems ?