According to my experience with jio, jio is the best smartphone network because jio 4g is present is all over the world, in the villages as well. I am living in village and I know in village we face great difficulty while using 2g speed. We know that the Airtel in faster than jio but we obviously use jio because in village Airtel Network is not present.And jio is giving more data, unlimited talk and sms in least price which is very good. I am using jio for 2yrs and I am satisfied with jio and I will use it forever without any hagitation I can trust upon jio.
When the jio limit exhaust it gives 126kb/s but in my area it gives 12kb/s.
But when your plan finish it will stop jio-to-jio calling further before it was giving jio-to-jio free.