Hello. Not sure if this is an issue or not. I went to unlock my s4 today and instead of my usual unlock screen, or any unlock screen I recognized for that matter, it showed this really nice black background with the time, date, and battery percent in the middle of the screen. But then it went black and my usual unlock screen appeared. Has anyone else had this happen or does this screen sound familiar to anyone? And how do I get back to that unlock screen? I am not running anything that would modify the unlock screen. It's what came with the phone.