I have bought this phone since 1year back . Initially I faced some problem with this . It was so difficult to use . Automatically screen size got large . Operating system was difficult to understand. So I felt a few unsatisfied with this. But after some days when I was trying to use this gradually I accounted with the system and now I am facing no problem with this . I can say I did well to bye this . I have not loaded any antivirus software in this . Still It works fine . No hang no software issue been found . Internet speed is very fast both in 2G and 3G network as compared with android phone . budget is nice . Camera quality is very good. Both front and rear camera is 5mp. best for selfee. Processing is very fast . Slim and stylish look . I feeling proud to have this and friends I can suggest you if you plan to buy smart phone, plz buy this .