Reliance jio is the best mobile network that I ever found in india in terms of internet speed. I am using reliance jio from last one month and I am really happy with its performance. I can get a downloading speed of up to 4-5 mbps which is more than enough. If I talk about the network availability and call quality it is not as good. Sometimes you cannot able to call from your jio sim due to some network issues. I recommend you all that go and buy reliance jio sim as soon as possible because it is available now for every 4g smartphone.