1. Device: Redmi 4X (Santoni) 2. Snapdragon 435 3. Works in MIUI 8 and not in MIUI 9 or any Custom ROM.  Tried many in OREO. will check others with latest PA v3 Preview released just now ?. Bit still Chances are less. As I already tweaked Build.prop and sound with AinurShauron MOD.  audio_policy.conf