Email and groupware features are fully compatible with the pre-installed Mail, Calendar and Contacts apps on all iOS devices. Synchronize any iOS device with Expanding Communication using ActiveSync or IMAP, CalDAV and CardDAV protocols. There are many free and premium apps for instant messaging that work with the enterprise instant messaging server (XMPP) for chat. Most mobile devices have limitations on using multi-media chat features such as voice or video chat. Please check the Apple AppStore more information.