Speed of jio is depends upon the strength of the signal but also we all know speed of the jio will not be constant it may increase or decrease but also we all know jio has daily limit of 1 gb then after the speed will 128 kbps.
The connectivity of jio he easier they were detailed show the battery, signal strength and wifi, symbols service is good and the product so useful . customer support towards jio fi 3 is good they are good to explain how to resolve the issue of signal in jiofi router wps etc.
There is sd card slot that can be useful to us over all jio fi 3 is good as portable device