According to our WDS (Devices) research service, global mobile phone sales will grow +5% in 2015. Asia Pacific will remain by far the world's largest region. The "big five" countries globally will be China, India, United States, Brazil and Indonesia by 2020. Emerging markets are outgrowing developed markets. Our extensive report -- available to clients here -- forecasts handset sales for a huge 88 countries worldwide for two decades, from 2002 to 2020. Almost every major country worldwide is covered, including United States, China, India, Indonesia, Russia, Brazil, Mexico, Japan, South Korea, South Africa, Saudi Arabia, UK, Germany, France, Italy, Spain, Sweden, and many others. Ourreport can be used by operators, software developers, content developers, handset vendors, component makers, car manufacturers and other stakeholders to determine or prioritize the size and growth rate of the huge global mobile phone market.