A majority of the people buying Lyf smartphones for the Reliance Jio SIMs seem to have been picking up the entry-level Flame 3 and 4 devices. Their primary idea is to buy the cheapest possible device which they can use as Wi-Fi hotspots to beam to the primary devices. However, there is a better way to do this, and that is to get a Reliance JioFi 2 Wi-Fi hub.
The Reliance JioFI comes with a free Jio 4G SIM. However, you will need to go through the full documentation to get through the process of getting the SIM, without which this is just another Wi-Fi hub. The device has a 2300mAh battery. In the box, you have a charger and USB cable.
The JioFi 2 switches on to create a Wi-Fi signal of its own. You can use the password printed on the device below where the battery goes in to log in to this network from any device and start browsing. Once you are logged in, open jiofi.local.html/ on your browser to log into the admin panel and change the password.