Hola a25 users ;)
Bored using simple lockscreen its time to replace it without installing any application or flashing a custom lockscreen file.
Here is how to do it..

√Rooted Micromax A25
√Root explorer
NOW in root explorer go to
System hold by tapping on build.prop and click on open as text editor and find line
Replace 104 to 1 for ics lockscreen and 2 for lumia lockscreen :)