Original post by: Alex Niculescu ,
Hi! To get rid of the screen-burn marks you will have to replace the entire display assembly, we have a guide on how to do that [guide|79120|here] (follow all the way to Step 7), if you want to do this yourself. However the problem will not be solved forever, as this type of problem occurs really often with AMOLED or OLED displays because static elements are displayed for too long in the same location without the screen refreshing them. You can only slow this down by changing your wallpaper often, hiding the on screen home keys and changing the location of icons every now and then. Keeping the backlight not maxxed out and setting a short screen time-out for the phone will also help.