This document discusses the rise of phablets, which are devices with screens larger than 5 inches that combine aspects of smartphones and tablets. It notes that phablet sales increased from 6% of total smartphone sales in 2014 to 21% in 2015, with shipments expected to reach 138 million units in 2015. The trends suggest phablets will account for 59% of the total mobile device market by 2019, with shipments reaching 400 million units. Phablets are also expected to replace PCs and become the most used devices in offices by 2016-2017 as software companies optimize for mobile environments.