Unlock your mi device after you unlock the device, it will become less secure your personal data might be leaked or lost unlock now. Download bootloader unlock. Download universal bootloader unlocker for android you can even use some of the default tools like kingroot application, this also an easy app to go through and unlock the bootloader of the phone after unlocking the bootloader, you will be using your phone; will get root access to the phone and much more.
download bootloader unlock
alternative link download