I am using jio from 1 year I didnt found any other oprator with low cost data and free call all over the country but jio gave it to me free for 6 month and network strenghth is also good with free roaming charges.there is no other oprator in the market which can beat the jio, jio is also the india’s fastest growing and largest subscriber in india.it also includes loys of free services like jio tv, jio cinema, jio music and many others at free of cost experience with jio is great I am still using it.