Kids do whatever they can do to overcome parental control because they were told no. Once humans hear that they are forbidden from doing something, they will only want to do it more. Kids are no different. And it is not even their fault. Once you give them a phone, what they use it for is their business. If you can't trust them, don't buy them one. My parents used parental control on me, and it was traumatizing. I never had a piece of privacy. Now I have anxiety, and I wonder why. I was never told to sign up on a number tracking app, so I always know who is calling me.