Slow mo 120fps and 240fps doesnt work, its because bugs from mi vide, please next fix use miuivideo.apk from developer and don't use miuivideoglobal.apk
I Try replace it, but we cant change permission system folder.
im using mi8 btw.
cant insert file from directory on facebook file post. And others aps which using select file from directory always force close.
my device is mi6
#edit, problem solved, its because im install 3rd prty apk, after uninstall it, everything is fine.