I need a little more information in order to better assist you. Does this happen with every call that you receive? Are you doing something specific with the phone with you notice this? Did download any new apps around the time you began to notice this issue?
It only blacks out with incoming calls. As of yesterday it started doing more weird things. To the point that it had to be reset completely, not sure if there was something that was downloaded accidentally and it's not doing updates either.
I don't know if it's a bug or what?
I don't know about any new aps either.