TATA docomo is best operator in India .before I was using some other operator where for me all call rates, messages, and internet plans are very costly ., I really worried because there was no rolling money .first they gave good offers but later they started to cheat but I put docomo .but in docomo every month I get good offers and just good call rates which I am really happy .thank you do much .and no operators are there in India which gives this much good offers .thank you so much .best ever