Unlocking the bootloader - Samsung Exynos

Warning: rooting phone or installing custom OS will void your warranty. The author takes no responsibility!

Go to about phone in settings
Tap on build number 7 times
Enable OEM Unlock

If phone doesn't show OEM unlock check out this article for possible solutions

Enter download mode by powering off device, hold power, bixby & volume down, when device vibrates let go of power.

At this point you just need to follow the onscreen directions
Press and hold volume up

Recommended tool; 

In case you need to reinstall/unbrick your Samsung handheld. 😊

Good luck. 🤞

Note: you may need to manually reset your phone after unlocking bootloader! Check this tutorial for more info