This article explains how to set up parental controls for your child's smartphone or tablet with Android OS.

Lock your Android device with a PIN or password. After you enable the lock screen, you will be prompted to enter the PIN when you wake up the device or try to make major changes, such as changing important Android settings.

Set up an Android guest account to allow or deny access to certain apps on the device. By default, Android blocks access to almost everything, including the Chrome browser, so you’ll need to manually select the games and apps your kids can use.

In the Google TV app, you can restrict access to content based on parental ratings. If you have children of different ages, you can set up specific profiles for each of them that are appropriate for their age.