This research report presents worldwide mobile phone shipment volume forecast and recent quarter review of major mobile phone vendor performance. The report includes major vendors' shipment volume, shipment growth trends, shipment revenue and revenue growth trends, operating profit margin and ASP. The report finds that worldwide mobile phone shipment volume saw sequential and year-on-year declines in the first quarter of 2009, and the combined shipment volume of the five major vendors continued to decrease sequentially. Worldwide mobile phone sales continued to dwindle and affected the industry's shipment in the first quarter. The decline of the major vendors was mainly due to the influence of Smartphone products launched by smart cellular device vendors, such as RIM, Apple and HTC, and the rise of Chinese mobile phone makers, such as ZTE and Huawei.