Please, please could someone explain what is going on with my SamsungS3. Screen is perfect, no changes to picture, clear, but for no reason there is a pink tint at the left corner at the top of the screen, it started 2 hours ago as little spot tint and spreading down. The tint is think in the corner and covers the picture completely - can not see, by the ends of the tint (circling line) still can see picture under tint. Nothing unussual happened to phone, using it from November 2012. Thanks