New Delhi: After registering a huge decline in the recent past, foreign direct investment in the telecom sector grew manifold to USD 1.5 billion in the first two-months of the 2014-15 fiscal. In 2013-14, the sector has received total FDI of USD 1.3 billion. FDI in the telecom sector, which includes radio paging, cellular mobile, basic telephone services, attracted only USD 9 million during April-May period of the last fiscal, as per the Department of Industrial Policy and Promotion. “Payment of spectrum auction, hike in stake by Vodafone in its Indian unit, investments in network rollout are few of the factors which I believe have helped in attracting FDI in telecom sector,” GSM industry body COAI Director General Rajan S Mathews said. The companies that have won 4G spectrum in 2010 would soon start investing in the country to rollout their networks.