TATA DoCoMo is an Indian mobile service provider and is a joint venture of) and Japanese telecom giant NTT Docomo. It is a GSM as well as CDMA mobile service provider and is the 6th largest service provider in the country. It operates in almost every state of India and offers quite cheap tariffs as well as value added services. It has decent network coverage and is preferred by many people. Do share your views and experience about Tata DOCOMO Mobile Service.