There's no doubt about it: Nokia (NOK 0.29%) is back. Having weathered the tough times (layoffs, plant closures, and the like), the company says it's now headed toward greener pastures. And from all appearances, it is. The company has launched a highly visible line of new smartphones it envisions competing globally, and it's working furiously to right the ship at its communication equipment joint venture Nokia-Siemens (SIEGY -1.09%). Will this turnaround be successful? In this video, Fool contributor Andrew Tonner gives his take on how long-term investors should approach Nokia today.