Bharti airtel is one of the most big network companies in india and the world .today im telling you my experience because I also use airtel . it has a number of offers in internet as well as talktime . I think the network works priety well and the network can be found in the whole of india. only in the places which are a bit inside there is a small problem of network other wise it is the best. MOSTLY THE BEST SMART PHONE NETWORK IN THE WORLD AND THE FASTEST