I am having lyf phone with jio sim card.
Likes:
Good internet speed
Real 4g speed
3-6 mbps speed all time
Good network coverage even in villages.
Dislike:
Quality of lyf handset
Sim supportable only with lyf phones
Sometime while calling it is like all lines are busy at the moment
Conclusion : jio will be the real market hero when it start officially.
This will be huge succesfull startup of world.