Sound System: The Xiome Redmi Note 3 has not a good sound system.Redmi note 3 contains only one speckers on its back.
Sim Slots: Xiome Redmi note 3 has a hybrid sim slot which makes you compromised.You can use one sim card if you use memory card to expand storage or you can use two sim cards then you will not able to use memory card to expand storage.So it is the most bad fetures of Redmi note 3.
Android Version: Xiome Redme note 3 runs by Android Lolipop( 5.1) not Marshmellow.
Containts in the box: You can not get a head phone in the box.
Charger: Xiome Redme Note 3 has not a power cherger.Its has only a normal charger of 2amp.If you can use a third party power charger then it( Redme Note 3) not be charged quickly.
Camera: Redme note 3 has 16MP Secondary and 5MP Primery camera which is not very good.