I have been using the Jio sim from quite some time now and not facing much issues with it.
The internet 4g works fine when you are still and not moving ( office, home, restaurant)
Call drops sometimes and voice breaks but it is with every network we have isn't?
The
sim and data, voice messages are free till 31 march 2017 and post that I bet it would be at minimum price in the market.
I have been hsing Internet approx 1GB oer day for free which is awesome.
The sim is easily available from the store and vendor anywhere in the city of your aadhar card.
4 sim can be taken for free on one aadhar card
Note: Only the aadhar card of same state is allowed to take the sim card.
Customer service is also amazing for a start.
Go ahead to get the sim specialy with dual sim devices recommended.