Available programs, features, and functionality vary by device, Windows Mobile operating system version, and version of Exchange Server used. Connectivity and synchronization may require separately purchased equipment and/or wireless products (for example, Wi-Fi card, network software, server hardware, and/or redirector software). Service plans are required for Internet, Wi-Fi, and phone access. Features and performance may vary by service provider and are subject to network limitations. See device manufacturer, service provider, and/or corporate IT department for details.