Samsung USB Drivers or Samsung Kies.(if you dont have Kies installed simply grab the Samsung USB Drivers from HERE.
Make sure to Enable ‘USB Debugging’ from phone Settings>Developers Options.
At least charge your phone up to 60%.
Back-up all your data.
How to Root Samsung Galaxy S4 GT-i9500 Running on Android 4.4.2 KitKat Using CF-Root Method
Step 1: Download all the required files from the above given links and keep them in a easy to access place by unzipping them on Desktop.
Step 3: Install Samsung USB Drivers(You don’t need them if you have Kies installed in your system).
Step 4: Now turn off your phone to enter the (Download Mode) by pressing and holding the (Volume Down + Home + Power buttons) at the same time for a few seconds and release it when you see a warning message on your screen.
Step 5: Next you will be prompted to press volume up button to continue just do it.
Step 6: When you are successfully entered into the (Download Mode) take a deep breath and Open Odin3 app on your desktop.
Step 7: Now connect your phone to the computer, let the USB drivers load and wait for Odin ID:COM port to turn blue along with a message on Odin saying Added. This shows that you are successfully connected to Odin and good to go further for flashing.
Step 8: Click on the (PDA) button located on Odin App and browse the CF-Root package that you unzipped, select the tar.md5 file.
Step 9: Finally hit the (START) button in Odin to initiate flashing the CF-Root package.
Step 10: Just wait for a minute or two to let Odin flash your phone with the rooted kernel, Once the process will be completed you will be prompted with a (Pass) message on Odin App and your Phone will reboot automatically.
Congratzzzz You just safely Rooted Samsung Galaxy S4 on Android 4.4.2 KitKat. To confirm your phone’s Root status, simply install Root check App from Google Playstore it will let you know either you have a Root Access or not. Once you are confirmed look out for what can u do with a Rooted Samsung Galaxy S4 GT-9500 on Android 4.4.2 (KitKat), well i guess you just uncaved a beast to get the most out of it. Move on to try some new custom roms and have fun with your phone. Come back to us for more rooting articles and share your views in comments