So I've had the Nexus4 for about 3 days now. There was a glitch where my touchscreen would not respond on the lock screen. I just waited and pressed the power button a couple of times and the touchscreen started working. Only problem is. The vibration is alot weaker than it used to be, everytime I press anything. Typing , menu selections and lockscreen vibrations are alot weaker after this glitch happened. Anyone know how to fix this? I think this happened a couple of times on my Nexus S but I could fix it by rebooting. I don't know how to fix it for the Nexus 4.