This document summarizes mobile and tablet OS market statistics, discusses Android and iOS fragmentation issues, and provides recommendations for video streaming companies. It finds that Android has a strong mobile presence but is fragmented across brands and models. iOS dominates the tablet market with over 80%. It advises waiting a year before supporting Android mobile, skipping Android tablets, focusing on game consoles and streaming devices instead of other platforms, and preparing for increased encoding and testing needs due to platform fragmentation.