I have already used this phone. RAM is only 512mb and u know now a days u can not Survive at 512mb RAM. And price is also matter as compare to Karbonn mobile you can prefer other mobile Brand at this price with more extreordinary features.
One thing that front and rear camera both are just a camera after a few months camera quality gets down and in headphone Jack you cannot connect other headphone except Karbonn mobile. Battery backup is not too good.