At first I want to tell my true experience that I am using TATA DOCOMOsince last 3years and 1month. I have a very bad experience.
Beacause Tata docomo has a very narrow range of network.
At my hometown it shows full network.
But when I visit any other place for any work I found not a single tower in my cellphone.
At that time I am very dissapointed. And thats why I didn’t like this network
Although when it gives a network it’s internet services are very good.
And voice call are also of good clarity.
So the conclusion is this - Tata docomo need some changes to come in the race of all operators.