Amid Coronavirus crisis, Facebook has bought a 9.9 per cent stake in Reliance Jio for Rs 43,574 crore, the telecom unit of Reliance Industries Ltd (RIL) in a deal that gives the social media giant a firm foothold in a fast-growing massive market and helps the Indian oil-to-telecom conglomerate to significantly cut debt. The deal values Jio at Rs 4.62 lakh crore.