Follow the steps -:
• First of all download and install the Framaroot app to your smartphone. Download Framaroot apk
• Then go to your phones setting > Security >then Check the box ” Install apps from unknown source”. then click on the downloaded APK file
• Once you successfully installed the Framaroot android app then open it.
Then you need to choose the “install superuser” from the drop down menu.
• Then you need to choose any of those exploits. ( If once does not work try other two)
After that, you need to wait for some seconds to get the message that ” Success, SU binary, and superuser installed ”. After just reboot your phone..:)