Next time , when you purchase Karbonn ( A9+, A15, A21 and A30) mobiles , you will get a stunning offer from Airtel. You will get 500MB of 3G data and unlimited
2G on Airtel free for a period of six months since its purchase . You are getting this bundled offer as a part of latest tie up between Handset maker Karbonn Mobiles and telecom major Bharti Airtel .