Obtaining root for the Samsung Galaxy S4 Mini LTE and dual SIM model is now easy thanks to insecure kernel. First download the following files:
Odin_v3.09.zip get it from here
recovery-clockwork-6.0.4.6-serranodsub.tar.zip link
S4Mini_RootKit_v2.zip (contains SuperSU v1.89 and BusyBox v1.21.1) download links
Extract recovery-clockwork-6.0.4.6-serranodsub.tar.zip file to your computer.
Then follow these procedure:
Copy the “S4Mini_RootKit_v2.zip” to your device SD card.
Turn off the phone.
Press and hold home, volume down and power. Download screen should appear.
Connect USB cable, and press volume up.
Start Odin, uncheck “F. Reset Time”, and then click AP button.
Select “recovery-clockwork-6.0.4.6-serranodsub.tar.md5” file that you previously extracted, and press Start button. The phone will reboot when finished.
After the phone resets (it vibrates) IMMEDIATELY hold volume up and home buttons to boot into recovery mode.
Select the option to install the ZIP file you have previously copied to your device and begin flashing it.
After flashing using CWM, reboot into system and enjoy your rooted device.
If you get any warnings after install, delete these apk files from system/app:
KNOXAgent.apk
KNOXStore.apk
ContainerAgent.apk