TATA is a good service provider in the service section of network. the network is good at places near by the towers of tata however its service may lack in the regions not near to the towers plus the data plans are also very cheap as compared to others . but as an disadvantage the speed of TATA docomo is very slow as compared to others. plus it does not gives coverage in the areas far away from the tower as the tower of tata docomo is less. if you are at home in the areas away from the cities the coverage will be so weak that you cannot hear the callers voice clearly. still it is a greatnetwork for persons who cannot afford costly data plans of other service providers. Also it gives you great customer service.