And apparently the ability to watch YT

the ability to watch youtube on a 240x320 screen? at that level, video is heavily compressed. is any text in videos readable? is it possible to discern tools and screws? or is it just a low-level entertainment device effectively?

Though yeah, my post is more about feature phones, not real dumbphones as I originally wrote in the title.

I have to admit I did not recognize a difference between these two. I thought feature phones and dumb phones are the same category.