I'm on my phone a lot, during idle times, anywhere. Even while scorekeeping other matches. But when I'm playing, my phone is in my pocket, and only comes out if I receive a text, which I check to see if it's from my wife, which I'd need to read. (Family stuff. She knows I'm at pool, and won't text unless necessary) When I used to be in management at work, I'd need to see if it was from work, as well, that's no longer an issue for me.
Otherwise, my phone is put away, while I'm playing. I get annoyed at others on their phones while I'm playing them, like most everyone else. Gotta shrug it off, and focus on what I can control.