I recently got my Samsung Galaxy S2. After I lock the screen and press a button to turn it on again (to unlock the phone) there is a slight flicker. White and black lines going vertically across the phone screen. Note: I can only see it in dark areas such as - Dark rooms at night or a Theater. It only flashes for about half a second. But it is REALLY annoying me. Does anyone else have this problem? I have only had the phone for 1 and half days.