Fullscreen caller photo
Well, not exactly since KitKat dialer is different from that in
JellyBean. By "fullscreen caller photo" we mean semi transparent glowpad
view for answering/dismissing the call, so the caller photo that spans
behind it is visible. The amount of visibility (transparency) can be
set. The bad thing is that there are call controls hidden behind the
glowpad view so semi-transparent glowpad makes them visible which
doesn't look nice...