That is one thing that is more disgusting about using a smart phone now days. When iPhone first came out it is about a music player and phone with extra features to facilitate real life things.
I don't want a freaking small computer in my pocket, and looking at small screens for long period of time is just NOT good for our eyes or postural.
We need to start treat these small devices as something we interact with very occasionally to facilitate real life interaction, not get our face stuck to it.
Not that working on laptop or workstation is much better, but it is better than writing on and viewing a video on small screen.