I am Using jio from last 3 months.
It us good because every service is free till date.
It is called 4G for Name sake only but it delivers a very slow speed while using internet as compared to many other 3G netwoks jio is slow , I guess the reason for its slow network might me maximum uses of the network.
ADVANTAGE OF HAVING JOI till now
Free Internet
Free calling
Free messaging
Disadvantage Of JIO
Cross connection while calling
Slow Internet speed.
Must Have A 4G phone/device
No network coverage to rural areas
Voice crack during call