 During his tenure, the company grew from a one-city operation to become the country's second-largest mobile phone provider, with more than 63 million subscribers.In 2007, he presided over the sale of Hutchison Whampoa's stake in the company to Vodafone in a deal that valued the business at approximately $19 billion.At the time, the sale was the biggest corporate takeover in India's history and, according to a Thomson Reuters  analysis, the largest all-cash transaction in Asia up to 2007, with Vodafone agreeing to pay $11.1 billion in cash for Hutchison Whampoa's stake.