I am a Jio user since november 2016. I am using it in iphone 6 and its working fine. My main sim is of airtel and frankly saying, now I used recharge it after many many weeks. Usauly I have to recharge for the data pack 2 or 3 times in a month. Jio makes it easier for me like many others. But now they limited there data usage to 1gb high speed and futher its speed reduces too 128 kbps. But still its fine with me, I mean you are getting something without any input. And free unlimited calls makes life more easier. But its uncomfortable for me to carry 2 mobile at the same time. But its worth it.