Sony xperia c4 mobile have sound system are very nice and good! this use my friend he was really good dont hanging and heating of its mobilehe was say mobile is really good and using a smooth touch or best camera in this phon.style of this phone is exilent so stylish mobile and its curve of body is give a dassing look! .other fearure is camera and screen is really good sensor are working exilentram and internal over all perfomance are really very good.My friend feel really good for he was buy a sony xperia c4.