problem with root s4 gt-i9515 I have S4 I9515. Can I use a ROM or root S4 I9505 to my phone or not?

I don't find any root for my phone. I even tried to root my phone with root S4 I9505 but when I try to give super user access to my "root checker application" it give me "this device does not have proper root access". But if I delete "super user application" and then run "root checker", it show me that I got good root. Also I use another su app but it is not working with me so what to do?
Try Frama root apk . 
It roots all high end devices.

How to install: 


Download Framaroot from XDA
Run, choose Superuser or SuperSU 
Select Boromir or another character 
You will see :-)
Reboot device 
Root- installed