Reliance Jio is a recent mobile tele communication company. Reliance Jio has made largest circle of their customer in only 2 months because of its 3 month welcome offer at the starting they are giving the good service but now I think they do not able to manage the largest circle of their customer. I am using Jio for 4 month but I am not satisfied with their services which they are providing because from the day I am using the jio sim I am facing problems like sim network is gone frequently since I have insert the sim in 1 slot and download all jio app also sometimes calls are automatically disconnected while I am talking to someone in the the phone. Sometimes calls are not connected also . Internet connection become very slow if your data is still remaining . In some area their is low network coverage and sometimes network is full still your internet work very very slow. Customer service is good but they can improve their services much more better. Charges and billing is little bit costly.