How do I make my kid’s Android phone ring even if silenced when I call him? Sometimes my kids forget to put their phones on ring mode and then I can’t reach them. I’m looking for a solution that will unmute their Galaxy S7 when my or my wife call them.
It might not be applicable if your kids are older, but my kid just got his first phone and I manage it with Google Family Link. Even when the phone is on silent I can make it play a sound and get him to answer a call or message. It's worked out really well for me, the one thing I don't know is if you can have more than one family device managers to manage the family's devices. It might be worth checking out at least.

I can also use it for managing screen time restrictions and other parental controls that I really felt were missing in cheap, stock Android phones.