Making money in a booming mobile-phone market that soared from fewer than 2 million users to more than a billion in less than two decades might have seemed like a no-brainer.
But in India, it's now looking more like a nightmare with losses for overseas companies rising to at least $US23 billion ($28.9 billion).
"The promise of a market with over one billion potential users is very attractive," said Chris Lane, a Hong Kong-based analyst at Sanford C. Bernstein. But "too many licenses, too little spectrum, high taxes and supply-constrained airwave auctions has made this a very expensive market to operate in."
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