As Commonsense Media states, "Android devices vary a lot in what they offer, so check your device's settings to see what options you have. If your child is under 13, you can download Google's Family Link to track and control online activity, including text messaging and social media, using your own phone.

You can use Family Link on teens' devices, but you can't lock the settings. You can also use Android's Digital Wellbeing settings, which are built into the latest version of the OS. These can help kids become more mindful of the time they're spending online--and hopefully help them cut down. You'll want to help your child enable the settings that will be most useeful on the road to self-regulation."