As we all know how popular is jio now a days.Till now about hundred million people are using this company in India because they are providing free of cost net pack.But a small problem with this service provider is that it’s net signal is very weak so it’s net speed is very slow. JioFi is a device that is for jio net.This device is little costly and it is limited to only jio sim and that’s big disadvantage of this device because there are some another device or 4G dongle that can use for jio as well as another network operator like vodafone, Airtel e.t.c so why we go for this Reliance product.