It is a superb se uper mobile hai, mast hai just love it .i gave 5 star in all features no hanging, no battery problem , super sound system, super camera slim and trim body it has internal 64gb but there is no memory card slot dual 4g sim otg supported, based on new technology , its service is good as my mobile motherboard is damaged the company change motherboard at no cost it has little problem of heating at exessive use, it has 3gb ram which is no problem of hanging I m running many apps in this , so isuggest as best mobile