Yes..!! Now You Can Disable Inbuilt Apps in MIUI 8
DO NOT DISABLE "GOOGLE APP" , IT WILL RESULT IN BOOT LOOP
2.Open App & Go to Settings & Tap Manage Apps
3.Then You Find An Icon on launcher. Tap & Open It
4.Select Your App & Disable it
5.Succesfully Disabled
DO NOT DISABLE "GOOGLE APP" , IT WILL RESULT IN BOOT LOOP