I use airtel prepaid connection from 2 years. This service is very good. Its networks coverage is very good and full signal always. Its 3g, 4g, internet speed is excellent. Airtel customer care service is very good. Its bill charge is very small and aritel gives us a wonderful facility. Aritel call charge rate is very good in my choice. So, I can sujjest you every one buy airtel. And use indias great network service.