Excessive use of mobile phones for children and adults is a big problem that Apple wants to tackle with iOS 12. With the new Screen Time feature, you can set app limits not just for a more balanced iPhone experience, but also another setting that gives you control over when certain apps can be accessed.
The new "Downtime" feature not only gives you more control over when your child can access their favorite apps, but can also help you. Restrict unwanted habits that you may have developed, such as surfing through Facebook late at night. This time-based setting is pretty easy to access and configure, as you'll see below.
: First time downtime activation
First, open the Settings app and select "Screen time." The first time you access this menu, you'll see a first setup page that highlights the features and guides you through enabling downtime. If you or your child has already accessed this menu and discarded the first setup pages, you can proceed to with step 2 .
Click Next at the bottom of the first screen When you go to a page asking you if the iPhone belongs to you or your child, either click "This is my iPhone" or "This is that." My Child's iPhone "