WHY ROOT ANDROID:
Android rooted phone means that you can have a better administrator privileges for all systems. With it, you can get administrative rights to root your android phone. Root is indispensable for android. With a root you can easily uninstall bloatware your android phone using system app remover and many other apps out there . Rooted phone or tablet provides access to new and even better ways to improve your battery life with app like Greenify and more. Enjoy longer and lasting battery on your android devices today. Rooting will open up a new window to your android you can customize in a whole different level, you can even change the firmware depending on your device and much more. After that, your application system lists will show “supersu”, which is sign of root success. It can give root permissions on your rooted device.
HOW ROOT WITH KINGROOT:First download the APK from bellow. Go to phone settings -> security -> enable check for Unknown sources if haven't enable this feature yet. Double click on the APK to start the installation once completed launch the app and Click "try it" to enter the main interface, and click "get now" button to start rooting. The implementation process is completed and finished, after that you will be return to the main screen, then the Rooting is done. Finally go Download: Root Essentials to Check the Root is successful, as the following figure which represents success. You can also use your windows PC to root your android but its more messy and complicated.
BETTER KEEPING IN MIND:
You should also know that rooting a device also implies quite a few disadvantages: If the process doesn't go well you may run the risk of bricking your phone. The operating system may become unstable. You'll lose the warranty of your device but nowadays some manufacture allows it. if you know what you're doing, it's a fast and safe way to become the superuser of your Android, whichever version of android you're running, since several forums (including XDA) have shown that it works on handsets running this version of Google's operating system. Visit Official Site to know more
KingRoot (One Click Root) v5.4.0 APK [11Mb] / Mirror / Mirror