Tap to open Developer Option.

This application is most useful for those user who are
1. Application Developer or App Tester to see logview of application

Easy and simple!
No Permission.

In Developer option Setting you can do:

Stay awake(Screen will never sleep while charging)
Access to Running service(View and control currently running services.)
Auto update system
Wi-Fi verbose logging
Mobile data always active
Select USB configuration
Don't keep activities (Destroy every activity as soon as the user leaves it)