<p>BlackBerry's 2013 ended on a rough note, as the struggling phone maker accounted for less than 0.5% of U.S. smartphone sales during the fourth quarter, according to a report.</p><p>The dismal sales figures came despite the introduction of the Blackberry 10 smartphone a year ago. The smartphone, running the company's latest version of its operating system, was supposed to help the Canadian company bounce back in the U.S. However, it appears that the company ended up taking a step backward.</p><p>During the fourth quarter of 2012, BlackBerry phones made up 2% of U.S. smartphone sales. That fell to less than 0.5% for the same period a year later, which includes the holiday buying season.</p><p>PHOTOS: Google unveils new Glass frames</p><p><a href="http://www.latimes.com/business/technology/la-fi-tn-blackberry-smartphone-sales-fourth-quarter-20140131,0,4479969.story">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.montereyherald.com/business/ci_25039187/business-briefs-blackberry-sales-keep-declining">Business briefs: BlackBerry sales keep declining</a> (Monterey County Herald)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dhuSOkW3NKNBN6MC0Sfw4v6x3zYgM&authuser=0&ned=us">96 additional articles.</a></p>