I hate to sound all old guy "Get off my lawn!!" about it, but Jesus Christ, I get sick of it... & it's not just young people doing it - my generation & older are just as guilty

I've also taken to saying "Heads Up!!" when people are walking straight at me, while looking down at their phone, instead of where they're going. I occasionally don't say it, then just brace my shoulder for the inevitable contact. I award myself extra points if their phone hits the ground