Lock Screen Problem

[ALiff Wan Zulkifli]

I have an unrooted s4, so basically on the lock screen when you hover around with your finger on the lock screen, the light or ripple effect will detect the finger movement but mine wont detect. Before this it did detect but now it wont.

Help please.

 

[Pol Isay]

I have a i9300 S3 with the updated 4.3 OS however, i only have ripple effect in my unlock effect option. My friend own I747 S3 4.3 and he has both light & ripple effect.