I am using this network since it is launched. Very nice experience with tata docomo. Internet Service was not so good but now its improved and give very effective service. 2g like 3g and 3g like 4g. Tata has really improve their network in India.
Cellular call quality also awesome voice doesn’t break continuously you speak with other. Personally 3g experience is awesome. Call rate also nice. Nice offers they provide on * 123#. Personally go for it.