You dont have a single reason to buy it if you have a 4gphone with mobile hotspot feature.
You can connect anything with your mobile, you want to connect with it.
I bought it because I wanted it to use it with my laptop.
At first, it seems good.
But its battery of 2300mah gives only 5-6 hours of usage.
Its speed is not much impressive.
Connecting it is hard sometimes, when you cant understand its signals.
One day, It stopped working, and I took it to the service centre.
There, I saw many people with issues on their jiofi.