This document provides a summary of different mobile operating systems in 2010-2011, including iOS, Symbian, Linux-based systems like Maemo and MeeGo, Windows Mobile, webOS, Blackberry, Bada, Windows Phone 7, and Android. It also includes brief descriptions and images for each operating system. There is a note about phones becoming the new PCs and a quote about not needing to hire mobile experts to build a great mobile team.