Same is happening to me, my brightness levels have come down it seems, earlier I could not take the high brightness mode and had to keep it low, suddenly m ok with at the high levels and the display does not look that vibrant, I called up the coustomer care and they asked me to do a soft reset, I did the the soft and hard both but phone is not glowing like before, now that u have pointed out I think I will go to the store and compare it with the demo piece.