Global smartphone shipments surged +38% annually in Q4 2012. We estimate the top 10 smartphone families accounted for over two thirds of smartphones shipped worldwide during the quarter. Samsung and Apple top the charts, but Sony's Xperia, LG's Optimus and Huawei 's Ascend series are quietly gaining traction. This report, Global Smartphone Shipments by Family / Model: Q4 2012, available to the clients of our HCST (Handset Country Share Tracker) service, tracks the world's best-selling smartphone families and models by shipment volumes from Q1 2011 to Q4 2012. This report will give you the information on how many units of iPhone 4S, iPhone 5, Galaxy S3, Galaxy Note and other flagship models from smartphone vendors have been shipped on a quarterly basis for two years. In this regards, this report is a valuable tool for component makers, car manufacturers, content suppliers, mobile operators, device vendors and other stakeholders who want to identify and measure the world's most-popular smartphones by individual model.