I have been using tata docomo since 2014. I perchesd it because of my friend. I was frsteted because of its poor network. In cities it is ok but in rural area it is not good. Many times there is no range and coverage area. It gives me headeche.
If anybody is going to plan for this I would suggest not to go with this. Comparativly others rates are enough low but we can not afford it for lot of disturbance of communication. So I will not prefer Docomo.