I used Aircel sim, now I dont use it, because it is not working great . It is very slow network. Not developed yet. I hate Aircel because there are many many problems we got in our area. There is no Aircel 3G and 4G network in our area. It got only 2G networks. We cant use Internet with Aircel, it is very very slow. I cant talk with Aircel sim because I cant hear others voice but it is just network problems. Now We need 3G and 4G network connection with aircel in our Area. Now many many people use smartphone but how to use Internet with Aircel network. . So I left aircel sim because it is not working in our Area. We get many problems with aircel. Nalbari Assam.