Yeah, somehow you’re going to have to see exactly what’s being talked about. It could be merely sexual which would be the least of my concerns as a parent.
I had to catch my kid being a moron on the phone (like literally snoop in the bedroom and grab the phone when the kid was asleep) and at that age they are such skillful liars that if I hadn’t done it I wouldn’t have known just what was going on and how bad it was. One line that I used to use was that I didn’t want to get a call from the principal that made ME look bad as a parent. Somehow that kind of worked. My kids turned out great and in general they tell me everything BTW.
Also around that age, even though it’s late in the game, you can still try to engineer social contact by having parties (for example, all ages) or picnics, some kind of project, teams, clubs, outdoor skills classes, camping… It really pains me when I see kids today in college neglecting IRL friendships and seeking to have online social relationships with kids at OTHER colleges! The phone can be a lifeline but also a pacifier.
