Controls & Settings guide
Android smartphones have parental controls for the Play store but not on the device itself. These allow you to set the maturity level of apps and set a PIN code for purchases.
You will need your Google account email and password for the device.
Apps Access 
In App purchasing 
Online games Setting up parental controls on your child’s smartphone is a great way to support their online safety. However, parental controls can’t work alone. Regular conversations, check-ins and consistent boundaries are all also vital to keeping your child safe. See how you can keep your child safe
Approve or block apps your child wants to download. Family Link also allows you to choose the right YouTube experiences for your child: a supervised experience on YouTube, or YouTube Kids.
When setting up your phone you will need to activate a Google account on the handset. You can use your own Google account or create/use the account of your child. You will be enabling a PIN on the handset that you will be using to set parental controls.
You can now set restrictions for “Apps & games”, “Films”, “TV”, “Magazines” and “Music” all of which are accessed via the Play Store.
Now we will enable your handset to require the Google account password when making purchases. Return to the “Settings” menu within the “Play Store” app (Steps 2-4).
On the “Require authentication” pop-up you can select to require your Google account password for all purchases, open a 30-minute window where all purchases are allowed after inputting your password, or disable authentication entirely.
Finally, we will now block the device from being able to install applications from services other than the “Play store” where we have placed the restrictions. From your devices “home Screen” swipe down from the top of the screen and then select the settings cog.
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