I have bought Samsung s4 LTE T-Mobile(SK telecom) at South Korea and was using in India more than 2 years without any issue on one of the LTE(4G) network(Idea network - 4G service) and it worked.
Now i started using JIO SIM which is 4G network for both data and voice . with this SIM , i can see that my SAMSUNG S4 is successfully register with JIO network. and able to see signal bars . however when i try to enable Mobile Data. it did not work .