It is a good free of cost service connectivity which is enable for 4g phone only not for 3g smartphone. So my frnd I only tell u a drawbacks because jio is not capable for any praise. First it does not have a good connectivity I know it provide a free service. People one thing u clearly think if we have a urget information to internet how we will get by the good connectivity but jio does provide. Ya I know its connectivity is good in some are like mumbai, banglore, etc but what what about other city or state. We had also facing a problem of call dropping and failed connection. So overall I am not satisfied for jio free service provider.