I choose this operator as they are providing free calls, internet and messages till 31st december . I brought it from reliance store and their service is great, I got my sim activated in 3hrs. I am using this right now and there is not problem at all. Their 4g speed is very good and I get around 6-8mbps . I really enjoying their offer and it is the best operator as they are giving free data, calls and messages. Love you jio:)