The document provides a summary of global mobile device usage trends based on data from April to September 2014. Some key findings include: - Smartphones accounted for the majority of devices globally, ranging from 65% in North America to 77% in Asia. Tablets accounted for 33-40% and feature phones 2-20%. - The top smartphone manufacturers were Samsung, Apple, and Huawei. Apple dominated the tablet market, comprising over 50% of tablets globally. - Android accounted for over 60% of the global smartphone OS market, while iOS made up 31%. iOS dominated the tablet OS market at over 50% globally.