This dad is genius.
Nick Herbert developed an app that locks the users (your kid’s) cellphone until they call their parents (you!) back. Shut up right? This is for real, no joke. The phone will lock up with a code that only the parent will get in the app that will unlock the phone.
The app is free and available for Android users only right now. You can pay to have more functionality of the app… but that’s at your discretion.