Eh, seems like most of it would work itself out.
If someone is dumb enough to check their phone during an interview, they won't get the job. If someone gets a bad grade because they can't pay attention for more than 2 minutes at a time, they should be able to figure out why their grades suck. If I go out with someone who's constantly checking their phone for things that aren't urgent, I won't make them a priority.
I'm with BRC when it comes to not being able to ignore my phone... I'm not rude about it and won't check it when I'm in the middle of conversation unless it starts ringing, but I don't know why anyone would be all 'hey look at that guy glued to his phone' if I'm checking it at a hockey game or a restaurant or wherever. IT doesn't have off hours, and uh, mind your own business?