Mark under screen glass on MacBook Pro Retina
On my 15" MacBook Pro Retina (Early 2013), around the entire screen, under the glass, there is a smudge that extends the entire width of the area before the viewable portion of the display. You can see an example in the picture below.
Anyone know what caused this and whether or not this would be something covered under warranty? My warranty expires in June and if it's covered, would like it fixed.
MacBook Pro with Retina display, OS X Mavericks (10.9.1)