If your device has a proximity sensor.. Close cover, and Device automatically goes to sleep. Open cover, and Device instantly wakes up.
Any Tablet, Any Phone, Any Cover.
For example flip cover, Leather cover, Diary cover, Book cover etc...
- How to uninstall app :
Setting -> Security -> Device administrators -> Uncheck the smart cover -> Try uninstall app
- Add Widget toggle button
- Add Status bar toggle button
- Add Interval of turn off time