Am using Vodafone since 2010 Vodafone supernet 4G not upto the mark network good but some problems also there in this customer service is a big problem but also Vodafone Supernet 4G quite good. I have only one sim it is Vodafone so am fully satisfied Vodafone is good for some best offer like call rate, message, etc.
Then Vodafone App also available it is useful for recharge and best offers.