Redmi note 4 is the best smartphone I also using it and this is the best smartphone you can buy it have 3gb ram and 32gb storage non removable battery hybrid sim slot and 4000 mh battery it is very smooth working display and fingerprint scanner which is very fast and a amazing picture quality with focusing camera and it have lots of features so if you are going to buy a mobile please buy this phone it is not less then iPhone it a iPhone of comman man