I am using Jio Sim since it’s lauch. The offering and network was very good in early days, but now I am facing various issues with it like poor voice calling and even data speed is not stable. Sometime it work properly and sometime not. Although it is offering great plans at cheap price but for quality it fails. If it doesn’t improve it’s quality in coming time I am going to switch to some other Telecom operators as quality matters a lot.