Global mobile handset shipments grew +4% annually during Q1 2012. Developed and developing markets delivered moderated growth. Africa, Asia and Latin America were the key markets contributing to growth, with Samsung, Apple & ZTE driving volumes higher. Samsung became the number one handset vendor globally, overtaking Nokia for the first time ever during the quarter. Apple edged up to third place for the first time in the huge Asia region. This report details quarterly handset marketshare for the world's top 30 vendors in North America, Central & Latin America, Western Europe, Central & Eastern Europe, Africa Middle East and Asia Pacific. Historical data by quarter from 2004 to Q1 2012 are included. Clients for our Wireless Device Strategies (WDS) service can download the published report here.