This is an extremely simple and useful application.
★ Helps you to lock the screen immediately by clicking on the icon of the application.
★ No need to use device's lock screen button.
★ Very useful in case your device's lock screen button is damaged.
★ Supports lots of different languages.
Why should you use this app?
Screen lock button is the most used keys on smart phones, so it has a high risk of being damaged.
With this app you can lock the screen immediately without hurting to your device's lock screen button.
To minimize the possibility of broken your device's lock screen button.
In order to remove this app, you must deactivate it at Settings ---> Security ---> Device administrator