Book excerpt: An up-to-date insight into Communications programming at Symbian, incorporating changes introduced by the latest version of Symbian OS (Symbian OS V9), which is the basis of the new phones currently reaching the market. It guides developers through the Symbian OS communications architecture and provides essential information on the communications models and programming interfaces used by Symbian OS. Clear up-to-date explanations of how Symbian OS Communications works, demonstrated with full code examples in each chapter Written by experienced Symbian engineer who leads the Symbian Communications Programming team Covers special topics to include Bluetooth, HTTP, Serial Communications, OBEX and messaging