It depends on the person. I know that some people feel very attached to there cell phones. There are some, nobody specific I can think of, but nevertheless I am sure there are some who feel helpless and afraid if they don;t have their cellphones with them at all times. With those types, you;re right. telling them they can’t bring their cellphones to a venue isn’t going to fly. Bu those people aren;t everybody. There are plenty of people who grew up in the era when I grew up and when we went to a concert, we went without a phone. Cell phones hadn’t even been invented. Of all my friends who went to as many or more concerts than I did, I honestly can’t even name a single situation where something seriously bad happened to one of them on the night of a concert which could have been prevented with a cellphone, had cellphones existed.
For people like us, who grew up when we did, telling us we can’t bring cellphones to a concert certainly would fly. My attitude towards going to a concert without a phone is: I did it before and I can do it again!
I have thought of an alternative, however. I understand that there are such things as disposable cell phones which do nothing but make phone calls, they don;t take pictures or record audio and because of that, they’re very affordable. An avid concert goer could buy one of those as his “concert phone” and that would solve the whole problem. Suppose it costs $25. If they bring it to 10 concerts, that breaks down to an extra cost of only $2.50 per concert to have a phone with them and I think they’d find that very reasonable.