Just tried it on Mi4 rebooting when it shows language configuration (just while loading sim pin lock). But I guess it's normal as it's tagged as Mi3.
After 2 reboots it shows optimisation of apps, I was able to enter pin code, no wifi also, no mobile data (impossible to connect with google server for setting an account), tried to reboot and now phone restarting, impossible to enter sim code.
Edit : camera crashes, screen light setting not working, no data connexion, music plays fine, bluetooth works, mm-qcamera-daemon drains battery, sms works
But anyway, good work for first custom kernel!