I am now fan of my Reliance JioFi. I am using this device from last 6-8 months. And it is running like a smoothy.
I have bought jiofi-3 at 2K. It is my own portable router which I can carry anywhere I go. It occupy just a pocket space so it can be place anywhere.
It contains a jio sim and a memory card slot. It changes with USB charger and battery backup is also awesome. I charge it at night and it gives me full day use of jiofi.
It also very good to use while travelling. You can also connect your laptop with it and use the internet over your laptop. Also I can connect multiple devices simultaneously with jiofi and not having much trouble with speed.
Its just a awesome product.