Jio is best smart sim. jio sim is very fast progress in market. mukesh ambani is the owner of relaince jio. this company launched its 4g service in india on september 2016. Jio, the largest 4g network in india offer high mobile internet connection.it cover all india in very few time.it only support on 4g phone.this data provides us in very low cost.As well as it have own jio app like jio tv , jio net, jio cinema etc.and also it available it own service center. Jio made india digital I likes jio