Widget Locker: WidgetLocker is the lock screen on android phone, we can replace itaccording to our liking. There are many screen locker scattered on the internet but you musttry this one.
Feature of the screen lock :
Dark Minimal Widgate Locker Theme : if u know many locker theme in the masket but u will dont see this locker theme in market because this locker is created only for personal user. This Theme is ver good , very simple and good permofma . added themed analog clock widget, themed widget locker notification icon, did more stuff … Suite!
Tron Locker is so beautyfull and very simple to use u can download this locker free , Tron locker is my first locker i said beautifull because i use my girl photo for background . with simple interface this Tron Locker is looking so cute like this domain 
hehehe . u can try download this theme in the market .
Simple Widget Locker : This time we will share to you a beautiful theme, in this theme, including a beautiful screenlock. almost for 2 months XDA android team make this theme. and now is finaly, with abstract background this theme is like natural theme. u can download free, please try and feel the beauty of this lock screen.
Instructions:
1. To install these, simply download the file to your phone and move it into:
/data/com.widgetlocker.teslacoilsw/themes
2. Then from your WidgetLocker lock screen, add a new custom slider.
3. Choose from the Theme pull down menu.
Download: simplismSense | WindowsPhoneMin | MNML Light
Themes created by qwerty160, dbrits, and zHk3R.