Reliance JIO reported flat q-o-q net profit; robust 14.5% q-o-q growth in EBITDA for Retail business: Reliance JIO (RJIO Digital Services business) reported EBITDA margin of 39% (EBITDA of Rs. 4,329 crore) and PAT of Rs. 840 crore in Q4FY2019, up marginally by 1.1% q-o-q. Average revenue per user (ARPU) declined 2.9% q-o-q to Rs. 126/subscriber per month and net subscriber...