My very near friend has tata Docomo card and its network is so horrible .its so insane to use this any further. Most of the time I call my friend it sounds .out of coverage. Its so irritating to hear this again and again. Despite of such bad services they promote there product .i am idea card user and have exprience this for several times.
They call again and again and force us to buy there sim card. I dont recommend to go for this services they are of no use.