A majority of the people buying LYF smartphones fro the Reliance Jio Sim seem to have been picking up the entry-level Flame 3 and 4 device which they canuse asa wi/fi hotspots to deam to the primary
devices however there is a better way to do this and that is to get yourself a reliance Jio wifi hub.
the reliance jiofi comes with a free jio 4G sim. however you
will need to go though the full documentation to get through the process of getting the sim, without which this is just another wifi hub the device has a 2300mAh battery in the box you have a charger and USB cable.