Reliance jio infocom a product of Mukesh ambani is very fastly growing up brand.
It is only operator in gujarat who provides 4G coverage and Higher speed 4G internet with unlimited data and voice call benifits.
I am enjoying this operators sim and also using lyf flame1. I am very satisfied with my cheapest 4G handset, it has 2000 mAH battery what is low for 4G bandwith. Over all I am happy to use 4G.