I have been using tata docomo sim from 4 yrs now sometimes it cannot catch the netwotk in many areas and many times the call drops also the call rates is very high compared to the other mobile operaters the customer support is also very bad customer care no. Is not toll free also the 2g and 3g internet speed is very low the sometimes 3g runs like the 2 gb if they will not solve the problem of network and their customer support.
There are many packs in the Docomo I had a sim with powerpack in which I got 500 MB internet free for every month.but it will work only for 3 months and after it does not provide any data.
worst service .