Not only for mobile but also other fild sony is a very famous and branded company in India because of there service. if say about sony xperia c3 dual this phone is really very good. if I say about the sound quality it has always good. it has clear sound and I can say that this pone is user friendly. the style and design of the phone has also very nice and it has so attarctive. and onething I also added you get some special features and the look and feel has also good. over all I can say that this phone has the value for money. I preffer all of you to go for this option and buy this phone.