It is a very good company by Mukesh Ambani.He wants to change India into digital India.So he has intoduced jio sim which gives people many free things like: - 1.free internet 2.free voice call 3.free video call etc.His dream is to change India into digital India.So he introduced all the free facility upto 31th of December.The network coverage of this company is also very good.But all the other opreator have blocked the calls from jio.So now jio has introduced that all can take the jio sim from the market