Based on the authors' experiences in developing and teaching Symbian OS, this practical guide is ideal for programmers and provides a series of scenarios based on examples of how to develop Symbian applications* Exercises the reader walks through the initial development of a game console based game console to a graphical user interface (GUI), based on two game player Blackjack game operates via a Bluetooth connection between two mobile phones * addresses How Symbian offers a number of different variables to allow With different user interfaces and screensavers - the most common of these is the S60 * discusses how moving towards 3G technology has increased the need for mobile application development for S60 devices.