I am using vodfon from.last 4 year I never have been see network problem in these 4 year . vodfon provide you best services, never charge any tule of hiden chrges if some time hapend like this they will refund with out any argument . vodafon 3G service is awsone.
vodafon cover almost area of india not even metro city it cover also ruler area. Once try with vodafon network. Vodafon post pad plan have lot of plan as per your monthely uses. for data, call& message.