According to our WDS (Devices) research service, global LTE mobile phone revenues surged +78% annually during Q4 2014. The 4G category is the fastest growing part of the mobile phone market today. Apple remained the world's largest 4G handset vendor byrevenue, followed by Samsung and Sony. Chinese brands OPPO and Huawei jumped into the top-10 vendor list, with surging LTE volumes and higher ASPs. Our extensive report -- available to clients here -- provides quarterly global LTE handset shipments, wholesale (transfer) pricing, and revenue metrics for 20 major vendors from Q1 2011 to Q4 2014. The report is a vital tool for monitoring the financial health and tiered marketshare of leading LTE brands such as Nokia, HTC, BlackBerry, Samsung, Apple and others.