I bought Vodafone 3g data card initially my friends sujjested to take airtel but since 4 from four years am using Vodafone I know how the net work performance is, it is very good and signal strength is very gud. You don’t believe untill now I didn’t face a problem of call drop in Vodafone.and coming to 3g data it is awesome speed comparing to other networks and the new offer we got that for the cost of one gb data we are getting 10 gb.and more than this jio is giving full competition to these networks but their is some drawbacks. In jio also y because I already used it Another new pack is also came flex one of the innovative offer in telecom feild, finally I want to say is as my point of view Vodafone is the best