Tata docomo mobile operator is one of the best comoanies of India, I am using it from about 3 year and I haven’t face big problem except some small. I am using 2G and 3G networks, both are working excellent.3G network is small weak but good working with better voice calling quality. Network range is so good even I get in underground rooms.
It provides cheapest call rate than other companies, the biggest advantage of using it that u can get free tata to tata call at just 135 rs, which is compratively very cheap. Internet packs are alao cheap even I get 3G pack of 1gb at just 152rs. Sms packs and raoming packs are available at considerable rates. Service provided by this company is excellent, custumercare helping is good but needs little improvment. I get easily docomo network every where in my region among all the network operators. I think it is best among all.