I'm aware of all of these measures. I was asking what the poster does.There’s actually really robust childlock setting on most phones, especially iPhones. If you’re in someone’s plan and they have had any access to your phone they can basically shut it down and make it a paperweight that can call 911 (and maybe 1 or 2 numbers), only be able to call with FaceTime (so you can see/hear all convos), no texting for a certain time/after a certain time, no internet browser, read every text from your device, see every search, and limit literally anything your kid wants to do.
miss pretty extensive.
To add to that list, there's also a number of GPS apps that exist for obvious monitoring purposes.