I use a vodafone sim card and I always suggest to all a vodafone sim card beacause of has a strong net work covrage,
and best costemer service, ,
to anjoy a inernet original services, and speed can be realize,
but one is problem in that company it is chrge a large amount of bill .
and other charges and also vodafone not get a hard copy of bill,
if you want so has company charge to additional 50 rupies no a bill,
I agree with that under a schavach bhaart mission and save tree but that amount is so large,
also thay can not soft copy of full bill on mail, if u want that to pay additional charge,