Jio is publish in 2016 and recently it got a fame .i buy jio sim in december because I like to use internet when I put sim in my phone I fell bad because the signal is very low some time sigal came and some time gone in my area the speed is very low .the bigest problem is jio sim is only work in a 4g phone some people have only 3g phone because of his money condition that is why poor people dont enjoy jio sim