I have a Xiaomi Redmi Note 4 3 GB RAM The sound of Redmi Note 4 is good but not very good, Its voice goes up to a room. Redmi Note 4 has fully metal body but the top and bottom is plastic. it has a SIM slot hybrid slot . It has a processor snapdragon 625 which save the battery, It took an octa core CPU Who works very fast and does not hang Its fingerprint sensor works very quickly.fingerprint takes two second to open the screen . Redmi note 4 screen size 5.5 cm and 2.5 D curbed class which is full HD . there are very good features in the redmi note 4As an exemplary first The screenshot takes over the sliding three finger over the screen and second features is a make a dual app. Redmi Note 4 Value for Money smartphone under 10999 Rupees