Maybe they can get addicted to something else? There's an app for Android called "Forest" that gamifies not using your phone: https://play.google.com/store/app

Maybe they can get addicted to something else? There's an app for Android called "Forest" that gamifies not using your phone: https://play.google.com/store/apps/details?id=cc.forestapp https://play.google.com/store/apps/details?id=cc.forestapp