Late last year, Nokia closed a deal to buy Norwegian firm Smarterphone, developer of the Smarterphone OS. That operating system has been around since 2008, powering feature phones such as the Kyocera C4700. The acquisition adds a new wrinkle to the company's strategy for lower-end handsets as it moves away from Symbian. We've already heard rumblings about the Linux-based "Meltemi" project as a successor, with Eldar Murtazin, for one, suggesting it will gradually replace the S40 operating system. He also believes the Smarterphone OS will replace the lower-end S30 software, maintaining Nokia's two-tiered feature phone approach.