Initially when Jio Sim was launched, it was good news for those people who were already having 4g supported phones. As expected by them those sections of people started enjoying the high speed internet with their supported device/devices.After sometimes when people were awared of the high speed internet free of cost there were bulk of people who upgraded their smartphones.Still there were a big sections of people who couldn’t afford to buy a new phone.As for them JioFi came as a blessing.With less than 2000 rupees they could use 4g in their smartphone.I am one of them and my experience towards JioFi is awesome.Its speed is unbelievable and it’s highly reliable.I recommend to buy it for those who don’t have 4g supported phones and I believe you won’t get upset.