While they wait to work with your smartphone, you can set the screen to go.
When you work you do not want to show it to someone while pointing the screen, you can proceed.
At the same time run a specific app, apps can be run together.
Before falling asleep after a fixed time or a certain period of time (timer), stop and turn off the screen, you can reduce the battery consumption.

* Administrator privileges reset selected setting is canceled after allowing administrators. Delete to delete the administrator set off after app.