Use pinning to keep the current app in view until you unpin it. For example, you can pin a game and your child cannot navigate anywhere else on your phone.
You can set up a pattern, PIN, or password required to unpin.
To pin a screen:
In the recent app list, touch the app’s icon at the top of the preview to see
.
Be sure to touch the app’s icon instead of the preview, which opens the app.
To unpin it: