By Tarmo Virki
HELSINKI (Reuters) - When Stephen Elop bet Nokia's future on a deal with Microsoft, he was hit with a barrage of criticism. After a year of respite, the chief executive is again being haunted by a decision that is costing the shrinking mobile phone company sales and favor.
Nokia <NOK1V.HE> switched from developing its own Symbian operating system for the as-yet untried Windows Phone software in February 2011 and is now stuck in a sales gulf between phasing out its old smartphones and ramping up production of the new ones.
Sales of the Lumia range that runs...