JIO. Using Jio since a week and calls are quite smooth. Faced some issues while connecting to other network voda and aircel but overall the call quality is very good. Network presence is excellent.Data speeds vary across apps. highest I got is 1.5MBps which is around 12Mbps. jio apps is good I watch live tv with jio 4G speed and also live sports, movie speed is smooth, I feel happy with jio till 30 december becaused its free.