These are the instructions to root Doogee Nova Y100X smartphone (running on android 5.0) using the KingRoot App.
Requirements: Your Android Device should have at least 20 percent of device battery and internet access to begin the root process.
Congratulations! Your device is now Rooted. You can verify the root status using any Root Checker app from the Play Store.
Readme Once:
[*] How to unroot? If you want to unroot the Android Device, then head over to How to remove Kinguser App page.
[*] Replace KingUser: After Rooting the device using the Kingroot, you will get a Chinese SuperSU app called KingUser. If you are not comfortable with the Chinese KingUser App and want to replace it with the official SuperSU App, then head over to How to replace KingUser App with the SuperSU page.
[*] Doogee Stock Firmware: If you are looking for the original firmware for your device, then head over to Download Doogee Stock Firmware page.
[*] Doogee USB Driver: If you are looking for the original USB Driver for your device, then head over to Download Doogee USB Driver page.
[*] Credits: KingRoot Application is created and distributed by Kingroot Studio. So Full Credits goes to them for the Application.