For some manufacturers, the MWC event was all about introducing quad-core to the market, with an eye on shifting a good number of the powerful smartphones throughout 2012. That didn't include Sony, which is unlikely to be selling any quad-core phones in 2012.The reason for that? The company has no intention right now of making any. Sony has, after all, only recently made the step up to dual-core with the Xperia S (pictured here), adding to its range of dual-core phones this week with the Xperia U and the Xperia P. That looks to be the way things will stay.Stephen Sneeden, Product Marketing Manager for Sony Mobile, speaking in an interview, said that Sony will likely only release quad-core Sony smartphones in early 2013. He does add that this is just his assumption, with the company making official announcements when it is ready to do so.'We're going to join quad-core when we feel that the performance matches the battery efficiency,' he said. 'Because right now we don't feel that is there. What we are going to be doing in the second-half of the year is moving to the Cortex A15 architecture, which we feel outperforms the current quad-core architecture.''You'll see in 2013, as we're evaluating the quad-core performance where it makes sense, where you're not suffering in quality and the performance truly is there, and there really is something that demanding applications need. That's when we make the right move to quad-core.'So a lack of power needed to fire up quad-core phones is the reason behind Sony's current stance with the next-generation chips. Be interesting to see how that pans out with the other quad-core phones recently announced - we'll find out when those handsets go under review in the very near future and let you know.