POV or point of view or call it whatever you want, it's something I will never get why you would want to shoot a movie like that. I can't stand that first person view, the only time I can stand it is when I play a first person shooter game on my console. In a movie it's just a technique that doesn't work. In fact I never saw a good movie made like that and I watch a lot of movies. The story itself is also pretty lame. When I read possession in the title I imagine immediately things like in the classic The Exorcist (1973) from William Friedkin. In that movie Linda Blair gave the best possessed performance ever and the special effects for that time were pretty good and special. For this movie, made in 2014 by the way, the special effects are laughable. It's not even a matter of budget as I'm sure any kid with a bit of technology knowledge can do better nowadays. As a horror it was also laughable. I could watch this movie on Halloween in the middle of the woods, alone at night, and still it wouldn't have any effect on me. It's boring, not scary, and the POV is boring as hell to watch. The acting was okay though, but that's about it.
