When I come to know about Jio.i want to buy it but my phone does not support 4G so I realized that I have to buy a low budget 4G phone.i searched on net and discussed with freinds then I decided to buy flame 1 at 4500rs.this phone comes with Jio preview offer which is like the main reason to buy it.but on the other hand the features of phone like 5MP both camera, Volte support, good battery backup make this phone a complete package in low price.so those who do not have a 4G phone and want to use Jio sim.just go and buy the Flame1.