After the launch of Apple’s first iPhone in 2007, touch screens became table stakes for handset manufacturers. In 2008, nearly every vendor came out with their own touch-screen copycat. MultiMedia Intelligence now predicts that by 2011, touch-screen phone shipments will reach 178 million. In September, ABI Research put revenue for this global touch-screen market at $5 billion in 2009, but this month research director Kevin Burden pointed out that not all touch screens are created equal.
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