Jio is quite the best network provider for data services yet the calling feature is not available for every phone. If u have a volte phone than u can easily use the calling featire whike non volte phone users have to install the jio 4g voice app to make calls. Jio network has some ups and downs due to heavy loads only. Youtube and playstore works very effectively without any buffering problems. Its activation process is very slow but the scanning devices used for activation of jio has made it easier to activate the sevmrvice witjout much delay. Jio is otherwise a very useful network.