For me this is very worst operator for customer because of network coverage is very low in urban area as well as rural area the call has not been properly called on this operator . worst network quality I used Tata Docomo sim I recommend not use this sim.
The customer service on this operator also not good lots of complaint to the company about the sim problems they not solve their customer problems
The charges and billing on this operator is very low but that is not only good for their customer prospective. the other things are not up the mark for their customer the internet packs are also in minimum prices. the call rates also. but as far as my openion this is a bad operator mobile network