Hello. I bought a generic flip phone case with "smart windows" that do not work. Is there a setting I need to turn on? For instance, it has a square window that should show when someone is calling and another one where I can swipe to answer the call. But when the case is closed and I receive a call, it remains blank. Also, when I shut the case, I am used with my Samsung Galaxy that it would automatically put the phone to sleep, or at least go back to the home page, but with this case, it remains on whatever app I was last using. Any suggestions?