If the child ignores the parents and uses hacks to bypass parenting controls then no parenting control will ever help. It’s a tool and it must be based on existing parenting foundation not replace parenting. If a child receives a smartphone the very minimum parents must do is establish trust in the social contract between the two parties: “I give you a phone and use a privacy respecting parental control if you agree to not mess with it and keep me in the loop”. If this simple base cannot be established then all parental control is moot and we failed already. It’s really not that hard. I used to think these magement and conflict parts are the hard parts of parenting but it’s really not, the hard part is how much time/energy kids eat up to the point where it’s easy to be lazy and not pursue management solutions which are really simple.