Cycling to work yesterday in pouring rain. IPhone4 in a sealed pocket. However, inside of pocket must have become damp due to capillary leakage. Phone still works fine, but there seems to be a genuine "watermark" on the screen now. I can see many circles that look like holes cut out of a circuit board. Is there any hope that the display will ever improve ? What might help ? Anyone know what these holes are ? Thanks.