Top three mobile operators spend $13.6 bln in auction

India's top three mobile operators scooped up almost 80 percent of the country's airwaves in fierce competition, spending $13.6 billion in the latest round of spectrum auctions that raised a record $17.6 billion.

The heavy bidding by the large operators underscores their big bets on the potential for mobile data in the world's fastest growing smartphone market.

The three operators bought airwaves worth a total Rs 855.75 billion ($13.6 billion), or about 78 per cent of the total airwaves sold in the auction, telecoms minister Ravi Shankar Prasad said on Thursday.

India raised $17.6 billion from the auction after 19 days of fierce bidding, of which the government expects to receive about Rs 288.72 billion in initial payments, Prasad said.

"I would very earnestly appeal to the companies that national revenue is equally important for growth and India's image," the minister said, appealing to winning bidders to submit initial payments before the current fiscal year ends on March 31. Spectrum revenue is crucial for the government to meet its ambitious fiscal target.

The winners have until April 4 to make the upfront payment. Idea Cellular, India's third-biggest mobile operator by market share, spent 303.06 billion rupees in the auction, the single biggest amount spent. Market leader Bharti Airtel paid 293.10 billion rupees, while Vodafone Group  India unit spent Rs 259.59 billion, according to figures provided by the minister.

Cash-rich Reliance Industries'  telecoms unit spent 100.77 billion rupees before a widely anticipated commercial launch later this year. 

(Reporting by Aman Shah in Mumbai and Tommy Wilkes in New Delhi)