Reliance jio is average ok sim card to use on daily basis but if you call on other than jio then u will be not able to get proper voice.jio to jio it is ok.now about net service provided by jio, net getting slow if you travel in train or in bus.if you having near by network of jio then it is speeds up.we are heard lots about negative points.but all are fake and not any true in that.i have already used more than 2jio card in one slot , still it is working fine and other than jio card is also getting accepts.everybody has to go with jio and jio apni life