Hiii friends here I am going to review on DU BOOSTER. When bought new mobile lenovo k4 note I just started this application.eventhough if it occupied more space in our mobile it not usefull before installing this application I had more expections on this application. After I installing this application the main problem had started during this instalation.the main problem was it not working it shows you have sucessfully cleaned but it is all fake. I just uninstalled this application when I understood there is a no use of this.now my mobile working in better way after unintalling this application Thank you.