I know there’s many people who cannot understand why others like to watch media on their phones, but that is how it is. You basically have that device anywhere with you, screens are big enough to watch stuff on.

Especially if you have saved movies/series on it, no matter if piracy or not, you got sonething to watch on that long train ride to work, or in your lunch break, or when you wait for some appointment.

Source: me, I am one of those. I am not taking my laptop everywhere. Even the smallest feasibly usable laptop is much bigger than my phone.