I just received the Kitkat update on my Samsung Galaxy Note 3 the other day. Prior to the update, when I got an incoming call I would open my cover and see the caller's name. I could then swipe to answer or switch to speaker or end the call. Now when I open the cover I simply get a black screen. I can't tell who's calling and the only way I can answer the call is if I have my bluetooth earpiece in. Does anyone have an idea how I can fix this? Thanks.