Apple has managed to hold on to its position as the third-largest smartphone maker in the world, says Gartner. The firm's research director, Carolina Milanesi, notes that Apple sold over 5.4 million iPhones in Q209, many times the 892,000 sold in the same quarter of 2008; the difference represents a greater growth than for any other smartphone company. By the end of the 2009 quarter, the busines