Original post by: ian ,
over the years, I did have a few ghost type issues after screen replacement with after market screens on iphone 7 that is. It turned out that the only solution worked for me is to replace the screen. I do believe that when the after market screen is matching to the OEM screen, that is when the problem is going away. So you would have to match the lg to lg or toshiba to toshiba etc… It is a rare problem, but it does happen and then you should pay attention.