Jio is offering free voice and data service. Jio sim and features is best but network problam is too much.
When you call from jio most off time its says all line are busy.
Advantage of jio sim is free data and call. After launch of jio other oprater cut his data plan rate. That thing is best after jio launch.
Disadvantage of jio is its network need volte supported devices. Most of devices not work on volte network. But realince give a solution for it. Download jio4gapp.
Also jio sim not supported in 3g mobile phone.
Jio network need a 4g comptable devices.
That things are bad because every man can’t afford a 4g phone.