Karbonn S320 mobile is mobile in which every thing is duplicate. I was saying this because I have use this mobile for 6 months in this I have face many problems and waste my money also. The mobile battery was duplicate because I have change its battery 2 times and buy a new one for Rs 800. Mobile was little bit heavy to carry and handle. Battery life was very bad it was written 3000mah battery but I think it has only 1800 mAh battery because it drain very fast. Display was very bad scratches comes quickly on the screen. I also repair the charging port because mobile was not charging when it was connected to the plug. Sound quality was little bit rough. Mobile works very slowly by having 1 gb ram also. Wifi and Bluetooth connection was nice no problem. Features are ok .Design and look become little bit better. Heating problem is their. Value of money should be less.