Jio is a good and cheap internet provider.it provides good internet speed at most locations.there is a bit of variation depending on where you are.
it provide good speed but after 1gb it provides very low speed like 20-30kbps.
connection realiability is depends on your location.
Major con of jio is service an support . the service and support is not good.
it is a good device for a normal home usage.
the device being the promo device has the best specification and built quality.
pros:-
small and compact
battery life is good
built quality is good
connect upto 10 devices
cons:-
only draw back is its antenna