Horse Ghost Picture

"I took this picture last Monday. It was only me standing there, watching my horse roll in his stable, when I decided to take a picture of him. The smokey image appeared on my phone! After I took it, it was not there. When I took the picture, I saw nothing through the lens, other than my horse in the stable; but this image appeared on my screen after the picture had been taken. It was only me by his indoor stable, so there was no mist, and no one was smoking. Looking at the picture, you can make out a mouth nose, and eye of what looks to be a man."