The struggling smartphone maker BlackBerry on Friday reported a loss of $423 million in the fourth quarter of its 2014 fiscal year, with revenues plummeting. The company said revenues fell to $976 million in the fourth quarter -- down from $2.7 billion 12 months earlier. BlackBerry said it delivered some 3.4 million smartphones in the quarter, but 2.3 million were the older models using its BlackBerry 7 operating system. The company last year introduced the BlackBerry 10 operating system in an effort to regain ground lost to rivals such as Apple and others using the Google Android operating system.



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