Tata Docomo is the worst company here I have seen the network connection of this company is just too bad just too bad so bad you will never get their connection in your home only only if you went outside of your home on the road then Ani will get some of the connection and just forget about Internet by 20 or 40% Tower you will never get a good Internet also Tata Docomo do not have three G in Kolkata and many other cities so therefore you just forget about Internet if you’re having Tata Docomo see if you never can not use Internet on there direction and all the maximum time will not received any of the calls because the company is too bad and the signal strength is disgusting my solution is to not buy any of the Tata Docomo SIM card is used for better if you go for Airtel of Vodafone although this company are also going little downloads but they are signal is far better then Tata Docomo so thank you guys