[BROOKNAM]

This happened to both of my diamonds the 1st one he changed the screen and shortly after that my vibrate stopped working. a few months later the replacement developed this although smaller in size, i didnt bother getting it swapped out since i was ready to replace the diamond altogether. The tech never understood wat was causing it, he said when he replaced the 1st one it seemed like some sort of moisture but not water, i would suggest you get it swapped asap before the refurbs start rolling out.