Note: Do not try on miui based custom rom or any other rom. You may brick your device that way.
Hey guys,
Face ID from Redmi Note 5 Pro was recently ported to Redmi Note 4. Now it's working on our device too ( Mi Max 2). I have packed this port in Magisk Module. I personally tested this on Global Stable 9.5.1.0. You can test on your phone running stock miui. Download the file from link given below and flash in Magisk manager. Reboot the device and check if "Add face data" is there in lock screen settings. If it's there you are good to go. Follow the instructions in that option and enjoy.
Credit: Shubhandu
Downloadhere
Hit thanks ?