There are lots of good answers there to the same question that essentially say the same thing as you, but minus telling your kids to fuck off and that you are the boss and smashing the phone. I tend to agree with them, as well as the people who replied to you saying that that’s not a very good parenting style. You’ll likely alienate your children and not teach them anything, except perhaps that they need to respond unquestioningly to authority or they will be met with violence.
I suspect that is more why you were downvoted, but not really sure why you want to re-litigate it here in the first place.