ANSWER: 9
Explanation:
India will have 9 crore 4G subscribers and 18 crore 4G smartphones by the year 2018. Firms like Airtel and Vodafone may benefit from this growth if Jio Infocomm from Reliance delays launch of services. 4G smartphone base is expected to jump from 5 million in 2015 to 180 million (18 crore) by 2018, leading to 4G subscribers accelerating from almost zero in 2016 to 90 million (9 crore) by FY 2018. Reliance Jiio is expected to be the market leader 2017 onwards, as per the report.