well, actually, the 15 yo is getting GABB wireless phone that now allow groups texts.
15 yo isn't really asking for more yet, and the 7 yo is the one I'm most worried about.
We do have an old Iphone that is a "family phone" that is used for the 15 yo or 13 yo when they go to a practice or lesson and need a ride home, but then it's back to the vault when they get home.
I know many disagree with this approach. But i don't really care.
Social is toxic and mostly pointless.