Apple's iPhone disappointment fans doubt on growth

Shares of the world's largest tech company fell 10 percent to $463 in after-hours trade, wiping out some $50 billion of its market value - nearly equivalent to that of Hewlett-Packard and Dell combined. Expectations heading into the results had been subdued by news of possible production cutbacks by some component suppliers in Asia, triggering fears that demand for the iPhone, which accounts for half of Apple's revenue, and the iPad could be slowing.