I used to use vadafone from the beginning of the period when I started to use the mobile. This was the one of the best card I ever used. I did not get any complient to use it for almost eight years but unfortunate the jio came in 4g speed then I could not control myself to buy and use the jio network. But still I use this in my mobil in second sim but now sometimes I get network problem and calling gets struk when I call