Be very selective about chrome
Shine the spotlight on what people really care about. Let it be front and center, with nothing to obscure or clutter the scene. Throw the shutters wide open and let people enjoy the view.
People care about content - pictures, messages, and updates. Be very selective about adding UI components to your screens. Reserve the majority of the screens for people to interact with the content in your application. This approach is especially important for BlackBerry smartphones with a physical keyboard because the screen size is smaller than all-touch BlackBerry smartphones. The goal is to create an experience where content is maximized and the displayed user options are kept to a minimum, while at the same time allowing users maximum freedom of control. For example:
You can place frequently used UI components on the screen, but do so judiciously. Be aware that every time you add a UI component to the screen, you are showing people less of what they care about.