India's top three mobile phone operators spend $13.6 billion in airwaves auction

By Aman Shah MUMBAI/NEW DELHI (Reuters) - India's top three mobile phone network operators have spent a combined $13.6 billion (9.1 billion pounds) in a government auction of airwaves to secure almost 80 percent of the spectrum on offer, reinforcing their positions in the world's second-biggest mobile market. "The outcome of this auction ... will eventually lead to a significant outflow of funds and further burden the industry, which already remains under a debt of 2.5 trillion ru