How Can I Root my Samsung Galaxy s4
Step 1: Enable Installation from unknown source by tapping
the menu button on your home screen, then choose Settings >> Applications >> Unknown sources
Step 2: Download and Install Towelroot.apk HERE
Step 3: Run Towelroot >> Click on make it ra1n. It will automatically reboot your device and you’ll be rooted.
Step 4: Install Super SU
TowelRoot will root your device, it will not install a
root manager, which is critical for keeping malicious apps from gaining root access. So dash down to Playstore and download SuperSU
Run and Install it on your device, You are good to go.