Hoping someone can help I have the Sm G900i model on 4.4.2 and I have smart stay activated and it was working great till about 2 weeks ago now the screen goes off while I am looking at it unless I touch something on the screen. Does anyone know how to fix this? The only thing that was different was I downloaded battery doctor after using this a couple of days I noticed my smart stay wasn't working so uninstalled battery doctor but it still isn't working. Thank you for your help in advance.