The worldwide mobile phone market grew 21.7% in the first quarter of 2010 (1Q10 according to Palminfocenter. "The worldwide mobile phone market grew 21.7% in the first quarter of 2010 (1Q10), a strong rebound from the market contraction in Q1 2009. Growth was fuelled by increased demand for converged mobile devices, more commonly known as smartphones, and the global economic recovery. "
