I koushik samanta, want to share my experience with you.already I use mi note 4 .
Mi note 4 is very slim but always it hot.charger cable is very small, and chargerpoint can damage.its ram 4 gb and rom 64 gb is good.like better being 4100 MAH is not good.charge supply for 1 day.skin is very good.mi not 4 phone’s wait something . core processor 1.5 gh.its amazing camera 13 mp and 5 mp.it do not give you any headphone.it is very bad.led notification is very bad.4g speed is not good this phone.when I purchased the phone, company do not give me bill.bad company good phone.
So, I request you to buy redmi 4.