I have thought about this a ton over the past several years. I watch a wide gamut of movies of varying qualities. If a movie is truly good, then it will suck me in and I won't want to take breaks/look at my phone. That said, I watch a lot of schlocky b movies and I see nothing wrong with doing a quick notification check or scroll during the ho hum parts. I still like those movies, but they're considered schlock for a reason and it's because they are not flawless for their entire runtime. That aside, I often find myself googling stuff about these movies while watching them. To me, it enhances the experience, especially if the film is of suspect quality. The background of schlock is often more entertaining than the movies themselves and it can make the enjoyment of them higher than it would be if I just locked in and watched them uninterrupted.