[Oukitel (All phone models)] 123lisa:
Hey there and sorry for the late response. What steps did you do so far? Is your bootloader unlocked already? Or are you at the start and this is your first try? If it is your first try, here is a step by step guide on what to do and what you will need.

What you need:

1. The SP Flash Tool and its drivers. You can find them on the Oukitel website or in the internet. Search for SP Flash Tool and download the latest. For the drivers it´s best to get them from Oukitel. Lower right side of their website and then click Latest software Rom and choose the K10.

2. The adb and fastboot drivers. Search them on the internet.

3. Your Smartphone.

4. A computer and the data cable.

5. The SuperSU 2.82 S3 files from chainfire. Again, search them on the internet.

6. The TWRP Image from this thread.

If you have everything, you do the following:

1. If you have used your phone already, safe everything you want to keep on your computer! You will have to erase your data at least once in the process!

2. Turn your phone on and go to settings.

3. Then tap on About your phone and scroll all the way down to see its build number.

4. Tap on that 7 times in a row to get the message: Congratulations you are now a developer. Go back to the settings to see a new option, the developer options.

5. Go to the developer options and tap on allow oem unlock and also tap on enable debugging options.

6. Leave the settings and connect your phone to your computer. Push the SuperSU file to your sd card (Magisk unfortunately does not seem to work and results in a bootloop at least for me).

7. On your computer, go to the folder where you saved the adb.exe and fastboot.exe. Hold shift and open a power shell or command window in there (don´t actually know the steps for a Mac or Linux computer, sry).

8. Now type adb devices and confirm the access on your phone. If your phone doesn´t show up or there is no confirmation message on your phone, type adb kill-server and then adb devices.

9. Once your phone is confirmed, you type adb reboot-bootloader.

10. Now type fastboot oem unlock and press the volume up button on your phone to confirm the bootloader unlock.

11. Your phone will now erase your data (internal storage only, your sd card will not be touched, but may need to be set up and formatted again if it was used to extend the internal storage).

12. On your computer, type fastboot reboot and set up your phone again (just the basics, because you will have to erase it again). Don´t forget to turn on the debugging mode again.

13. Open up the SP Flash Tool on your computer and choose the scatter file from the twrp image (custom recovery). Only recovery should be ticked. Hit the download all button, connect your phone to computer and turn off the phone. Now wait till there is a green hook on your computer. This means, the download has been successfull.

14. Get to recovery mode on your phone by holding the volume up and power button at the same time and choose the first option, then hit the volume down button to enter recovery mode.

15. From here, go to the settings in the upper right corner and choose your language (ignore the message of the password and hit back).

16. Now go to Wipe and format your data.

17. Hit the restart button and press Recovery. Allow it to modify the system and pull the slider.

18. Now go to Install, choose your sd card and press SuperSU. Let it run through the process. Then restart and press system. First time the boot may take a while, so be patient.

19. Set up the phone and enjoy your root.