Sony Ericsson unveiled its new X10 flagship mobile phone on Tuesday, its first to run on Google's Android operating system, but said it would not go on sale until early next year.

Android has gained a lot of traction this year as handset vendors look for ways to beat Apple's iPhone. Loss-making Sony Ericsson, the world's fourth largest handset maker, has suffered since 2008 from a lack of attractive high-end models in its offering, and saw overall third-quarter sales shrink 45 percent year-on-year.

The X10 will have a 4-inch-wide touch screen, use Qualcomm's Snapdragon processor, and come with an 8.1 megapixel camera.

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