Pramod1988
It seems like a bug. please write to developers in feedback app to resolve the issue in upcoming upd ...

most of the source said that the Xiaomi makes the official move to reduce the out put quality. if it's true it's a waste of the technology. they should not be used 10v stand alone amp for this phone. is it fair to put a hardware and after limiting it's ability ? isn't that sounds like apple's move towards 6s and 7 owners ? is xiaomi is expecting us to upgrade to their new models ?