Use this 'Lock Screen' icon to lock your device !!!!!
Lock Screen app will put the screen to off mode and lock your device. It will also make user at ease, in locking the devices via touch of the icon – Lock Screen; instead of using the hardware button frequently. Moreover, this application will prevent excess usage of power button, by making it to last longer.
NOTE: To help us improve better, we request you to give your valuable comments or suggestions if any, along with the problems, encountered while using this app; as they play a vital role in making our work commendable and also satisfy the users.
Download apk file for android: https://goo.gl/zFiPj0
Android Tools Apps 