I bought MI note 4, 4 GB RAM and 64 in October .At starting is was running very well but after 2-3 days the phone started heating much I think it was normal but it was just increasing day by day then I contacted service centre and they also said that this is normal but it was getting worst and at mid of november when I was charging the phone the phone get blasted and and my luck was good on that day because I was away from the phone . So I used the phone for very less time .so my review is based on that days . Sound quality was good was volume was low as compared to other phones. It was user friendly mobile if you used android mobiles earlier .Nothing new interface in this phone. Style and Design was the copy of other mi phones .There is nothing new in it for design and Style . The remote was good and after this noother functions as compared to other mi phones. Looks was good and gives same feel . In my opinion it is waste of money because of my phone blasted and not only mine phone blasted but there are also many cases come of MI phone blasted .So I suggest you to not buy this phone.