Vodafone Group plc (LSE: VOD, NASDAQ: VOD) is a British multinational mobile network operator headquartered in Newbury, Berkshire, United Kingdom. Vodafone is the world's largest mobile telecommunication network company, based on revenue, and has a market value of about £71.2 billion (November 2009). It currently has operations in 31 countries and partner networks in a further 40 countries. Based on subscribers, it is the world's second largest mobile phone operator behind China Mobile, with over 427 million subscribers in 31 markets across 5 continents as of 2009. In the UK, its home ground, Vodafone has badly underperformed in the last few years due to brisk change in administration....