Tata docomo has changed alot, earlier it was hvng good network and internet speed but nowadays it has became worse, network became weak when I am in my home, to make calls or something I need to go out of my house, inernet speed also got reduced, I complained many times in customer care but no proper response comes from them, only one response come restart the phone or clear cache and cookies, I was fed up and I thrown the sim card, I will suggest everyone to not buy tata docomo sim ever instead you can choose other sim.