I find it very difficult to watch anything on my smartphone. It's too small and hurts my eyes. It's why I couldn't resist not buying 55 Inches Curved Smart Samsung TV which I make use of at home. I watch all my movies on it. 

Unless whenever I'm travelling and bored, then I might be interested in watching any kind of movies including horror movies on my smartphone just to kill time. It's not something that I do very often because it's not that fun. 

I don't mind watching my horror movies on any device. If it's mobile phone that's actually available for me to watch on at the moment, I'm going to use it and enjoy the movie visa vis watching on TV or PC too. 

I can't remember the last time I watched any kind of movies or TV show on my smartphone. The rendering is very poor and the images are smaller. I use a Smart TV, so I stream on my TV. 

I don't watch horror movies on my smartphone or my laptop because both of them will not give me what I want when it comes to being entertained very well watching that kind of movie.

I prefer to watch such movies on my 55 inches plasma television because it is going to give me a bigger view of what I'm watching. 

All the movies have been with my laptop unless when it's down or if it's switched off. I love watching movies with my laptop because the display screen is larger and I can see everything clearly. I can only use my smartphone if my laptop isn't available or if I am traveling.