Nerval's Lobster writes "Nokia CEO Stephen Elop first took to the stage at Center548 on New York City's West Side, where Microsoft had first unveiled Windows Phone 7 in late 2010, to claim that Nokia was becoming a 'more nimble competitor' thanks to several strategic decisions under his tenure, including the choice of Windows Phone as the company's primary smartphone platform. ... In terms of [the 920's hardware]: the battery is 2000 mAh; the processor is a dual-core Snapdragon S4, which was apparently selected for its energy efficiency; and the aforementioned wireless charging, based on the 'Qi' wireless charging standard. ... Despite the enthusiasm displayed onstage for Windows Phone 8, the new smartphone platform poses something of a conundrum for Nokia. The company invested heavily in Windows Phone 7, all but abandoning its homegrown operating systems — including Symbian, once a dominant player in the mobile arena — in favor of Microsoft’s platform. But those Windows Phone 7 smartphones won't upgrade to Windows Phone 8 software, and nor will they run Windows Phone 8 apps."