A BlackBerry smartphone functions as a personal digital assistant with address book, calendar, memopad, and task list capabilities. It also functions as a portable media player with support for music and video playback and camera and video capabilities.
The phones possess a large array of messaging features, including auto-text, auto-correct, text prediction, support for many languages, keyboard shortcuts, text emoticons, and push notifications for many systems including email, Facebook, Twitter, Myspace, and Ebay; push instant messaging via BlackBerry Messenger, Google Talk, ICQ, Windows Live Messenger, AOL Instant Messanger and Yahoo Messenger; threaded text messaging and a customizable indicator light near the top right of all BlackBerry devices.
All notifications and conversations from applications are shown in a unified messaging application which third party applications can access. All data on the phone is compressed through BlackBerry Internet Service (BIS).