If I just walk around the neighborhood, nearly half the pedestrians are staring at the phone, oblivious to where they're going. Sometimes I have to shout "Hello

If I just walk around the neighborhood, nearly half the pedestrians are staring at the phone, oblivious to where they're going. Sometimes I have to shout "Hello!" to get them to not run into me. And these are (mostly) adults. One guess what class of app they're all staring at.