Hey all so when I make a call and press the home key to do other tasks this weird problem happens. Where when I try to slide down the top bar the one which shows bluetooth/wifi/gps/etc the screen goes dark and i have to press the power button for it to come on. It doesn't turn off it just goes dark to save energy. So I can't drag down the notification bar to go back into the call settings for stuff like mute/end call and speaker. Any ideas why the screen keeps going off when I try to drag the notification/status menu down?