4G capable mobile devices are beginning to emerge as the next major platform opportunity for mobile operators, device OEMs, IC vendors, network equipment vendors, and content companies to deliver premium services and products. Despite the growing number of 4G capable device segments, the smartphone will remain the largest and most important device segment for incumbents and new entrants to address. The projected shipment volumes of 4G smartphones far surpass all other device opportunities and will greatly affect the design choices and technology paths of products and services looking to cash in on the 4G opportunity. This report highlights key drivers and barriers faced by market participants in the emerging 4G (LTE & WiMAX) smartphone markets. Handset OEMs, spectrum allocation considerations, and their effect on the design of 4G chipsets are highlighted and discussed. Regional and country level forecasts demonstrate the potential market value for 4G smartphones and 4G IC vendors.