Redmi note 4 is very good mobile in this price but some problems in note 4. company solved this problems and improved the mobile. first problem is no quick charge because quick charge not supported. second problem is redmi provide metal body but back side of note 4 no metal body. third proble is little issue in sound bug. fouth problem is no protection because not gorilla glass in note 4 mobile. fifth problem is camera. camera quality is not a very good normal camera. otherwise mobile is very good but this problem is not a very big little problem company has solve this problem and improved his mobiles.