Noticed today that when the phone is unlocked with the power/unlock button, that the screen starts off at a significantly lower brightness, but the light sensor seems to then kick in and the correct brightness is then displayed after. This happens for only a fraction of a second, but is quite jerky and immediate. Is this normal, or should the screen brightness remain one constant level from unlock? Of course, changing when it should based on lighting conditions. The same also happens when the screen is about to sleep. Once the lock button is pushed, the screen brightness almost notches down in 2 steps. First at half the brightness, or so, and then off completely. Again, not necessarily smooth, but quite jarring. Again, is this normal of other Captivates?