It is really a god service provider in india, here I am using TATA DOCOMO and can say that it is really a god network as well as good call rate and really a good for people, you should also purchase TATA DOCOMO I am using tata docomo for five years approximately really a good network coverage in india also a cheeper call rate. Aslo the customer is very much satisfied with this . customer care service is too good in TATA DOCOMO