Reliance jio network is currently the best network for surfing the internetat 0 price. Also its provide a free internet, voice calls, sms e.t.c. But I noticed that there is some delay for connecting some call and call drops. Downloading speed is also not good. But its internet surfing speed is very good. So I used Reliance jio SIM as my secondary sim. All the app provide by jio is also very good and working fine. Also its a great issue that jio is only supported in 4G enabled( LTE) mobile and not in 3G( lots of trick are in YouTube but they didnt work at all) . So hope that Reliance jio will be think over that issue and also the voice call problems. Thank you.