Significance: Despite its dominance in Africa, Nokia has suffered of late due to a falling share of the lucrative smartphone market. The company has recently announced a fight back to smartphone leadership, pointing out that its Symbian operating system remains the most widely used smartphone platform in the world. The world handset leader announced earlier this month that chief executive officer Olli-Pekka Kallasvuo will be replaced by former Microsoft employee Stephen Elop, following a series of disappointing quarters. Nokia still controls some 40% of the global smartphone market, but has lost out at the highest end to new rivals such as Apple, Research In Motion, and Google's Android.