Nokia purchased Norway-based feature phone software developing company Smarterphone AS in November 2011, but the deal surfaced only now. The Norwegian company is known for developing Smarterphone OS - its own operating system for feature phones. Its platform has been used on only a few devices like the Kyocera C4700 and the Vibo T588.
It’s not fully clear what part of Smarterphone Nokia will leverage into its business, but it’s possible that its insight could be used to make Series 40 phones even better.
Nokia is also working on its own Linux-based operating system for affordable devices - Meltemi, and helping develop that could be another reason for the acquisition.