Teens tend to use their phones a lot at concerts. At least that is how it appears to me.
I've been to shows with a lot of people on phones.
In general, older people are more considerate of others. I'm sure everyone will take some pics and a video or 2, but I imagine older people would value the experience and choose to be 'in the moment' as opposed to texting, tweeting, or uploading pics and video to social media while the concert goes along in the background.
Let people enjoy the memory in their own way. Unless someone is standing in front of you with a 12 foot iPad blocking your view who gives a shit?
Regardless, I never understood the hate for phones at shows.
I mean, it got annoying once at a show because a woman's phone was literally on my head because she couldn't keep her arm up, lol.
It normally does seem to be a lot of young teens, but I notice they get all emotional over the songs, so maybe they have different meanings to them. Also, I want to keep memories of an awesome night (although I'm more for pictures and a few Snapchat videos).
ALSO I'm short, so chances are, I can actually see in someone's screen, rather than being stuck behind a 6 foot bro.