Chosen Solution
It’s on the corner of screen, fluidic, thus movable, size is same, around size of home button, how to push it of the corner?
You damaged the LCD in some way, shape or form. I don’t advise you try to move the splotch to the corner because you will damage the LCD more than it is now. Replacing the screen is a better use of your time and will solve your problem in the long run. iPhone 4 (GSM/AT&T) Screen Replacement iPhone 4 (GSM/AT&T) Screen
