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You must meet the following criteria before you can use Family Link:  Your kid must be under 13 years old. You can also just create a Google Account for a sub-13-year-old if you want to use Family Link for a teenager.  Your kid's phone or tablet must use Android Nougat (Android 7.0) or higher. You must have a Google Account. You must live in a supported area. Supported areas include Argentina, Australia, Brazil, Canada, Chile, Ireland, Japan, Mexico, New Zealand, United Kingdom, and United States. Be sure to do this on the Android from which you want to control another Android, not on the Android on which you want to block porn. Open the {"smallUrl":"https:\/\/www.wikihow.com\/images\/1\/1e\/Androidgoogleplay.png","bigUrl":"\/images\/thumb\/1\/1e\/Androidgoogleplay.png\/26px-Androidgoogleplay.png","smallWidth":460,"smallHeight":531,"bigWidth":"26","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of an Android icon\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"} Google Play Store, then do the following:  Tap the search bar. Type in family link  Tap Google Family Link  Tap INSTALL  Tap ACCEPT when prompted. Tap OPEN in the Google Play Store, or tap the Family Link app icon. The Family Link app will open to the introduction screen. This icon is at the bottom of the screen. Doing so will take you to the beginning of the Family Link setup process. You'll see this option at the bottom of the screen. It's in the bottom-right corner of the screen. In order to set up Family Link on your Android, you'll have to select the correct answers by doing the following in the lower-right corner of the screen:  Tap YES  Tap YES  Tap YES, I AGREE This will take you to the account creation section. Unfortunately, even if your kid already has a Google Account, you'll have to create a new one for them. Do the following:  Enter your kid's name and tap NEXT  Enter your kid's date of birth and tap NEXT  Enter an email address for your kid and tap NEXT  Enter a password for your kid and tap NEXT twice. Check the "I agree" box, then tap AGREE  Enter your card details for the $0.01 confirmation transaction, then tap ACCEPT Tap NEXT twice, then follow the on-screen instructions to set up your kid's phone with Family Link. Once you've finished adding the kid's phone to Family Link, you can proceed. Each Android phone comes with a certain set of pre-installed apps; once you're finished setting up Family Link, you'll be prompted to allow or block each app before the setup process is complete.  Blocking apps such as Google Play Music will help moderate the content that your kid can access. Apps like YouTube and Android Pay are blocked by default as you must be over 13 years old to use them. Like most Android phones, your kid's phone most likely has up to three built-in browsers: Google Chrome, Google Search, and a stock "Web" or "Internet" browser. You can enable SafeSearch—a filter which blocks pornography—by doing the following for each browser:  Select the app in question (e.g., Google Chrome). Tap Permissions  Find and tap the SafeSearch option. Once you're done with the setup process, your child will have an Android phone that cannot access pornography, mature content, or unapproved apps without your explicit permission.

Summary:
Make sure that you qualify to use Family Link. Download the Family Link app on your Android. Open Family Link. Tap  three times. Tap GET STARTED. Tap START. Answer the questions. Tap NEXT twice. Create a Google Account for your kid. Connect the kid's phone to your Family Link account. Change app permissions. Enable SafeSearch for browsers. Finish setting up Family Link.