Without a doubt jio has the best 4g coverage in india. If someone plans to join the party offered by jio, which is about to o over and wishes to spend only 2000 rs this is the best thing you can buy. But some limitations which I personally do not like-
Jio should have offered of HUWAEI brand.
This should have option to select LTE BAND ( 3, 5 or 40) .
This should support sims of other brands too.
Calling app made for this aka jio 4g voice very often does not connect.
This should be a bit cheaper.
Overall a good product from jio.