The operator vodafone is a good choice for the persons who uses their mobiles only for the purose of calling and message but not for the people who wants to use high speed internet with best tariff rates.Iam myself using this network from past four years where I found lag in signal what aleays disturbs my phone calls.I had complained about this problem several times to the customer care but no response from their side at all.So , select this network only if you are in need of mobile calls and messaging.One good thing for this network is offers good tariff plans.