I bought Lyf mobile for Rs.3000 ( Flame) and I got Jio sim with that and was activated within 2 days.
And I was never experienced such a speed.
I will you one more thing I did’nt used in Metro, Town but I used it in my Village where there is not even proper 2G network of other providers.
They provides such a nice connectivity.
But Calls are not connecting that much easier sometimes.
My data usage was more than 35GB which would cost nearly 4 to 5K INR but I was using it free with Jio.