With LockScreen you can lock your phone in a comfortable way from our home screen widget. Avoid wearing down your power button.
If you want to uninstall LockScreen, you must disable it before to proceed. Steps:
1) Go to Settings
2) Location & security
3) Select device administrators (device administration)
4) Disable LockScreen by unchecking its checkbox.
5) Now you will be able to uninstall it!