I am vodafone customer from last month.i bought vodafone sim only for internet connection.i am also the mtnl customer but the internet service is very poor .but I have to say that the internet connection of vodafone is supurb and excelent.
I took a connection for 4g services.but I did not got it yet.but the 3g connection is also very good .even in small villages of bengal .i got 3g signals .its service are little costly .but it is good in conpare to airtel
Thank you