Simplicity
• Create a simple design that allows users to find what they want quickly and easily.
• Reduce the number of steps that users need to take to achieve their goals.
• Communicate clearly using concise, unambiguous labels and commands.
• Place the most frequently used tasks on the screen. Include additional tasks in the menu or on subsequent screens.
• Present information as users need it.
Aesthetics and minimalist design
• Avoid visual clutter. Limit the use of color and use consistent geometry. Chunk large amounts of information by
grouping similar information.
• Use animations and graphics to enhance user understanding and support the metaphors in your application.
Accessibility
• Include accessibility requirements to support users with visual, hearing, or motor disabilities or impairments.
• Make sure that your application scales properly when users change settings like font size.
Constraints of designing for mobile devices
Strive to provide a balance between the best possible user experience, a long battery life, and efficient connections to the
wireless network. When you design your BlackBerry device application, consider the differences between mobile devices
and computers. Mobile devices have the following characteristics:
Characteristic Guideline
A smaller screen size that can display a
limited number of characters
Stay focused on the user's immediate task. Display only the information that
users need at any one moment. For example, a customer relationship
management system can provide a massive amount of information, but users
only require a small amount of that information at one time. Design the UI so
that users can perform tasks easily and access information quickly.
One screen appears at a time Allow users to switch between applications using the application switcher.
Shorter battery life Design your application to handle data efficiently. The less often a device
needs to turn on the radio, the longer the battery life. A longer battery life
creates a positive impact on the user experience.
Wireless network connections with a
longer latency period than standard LANs
Try to simplify how an application creates network connections. Longer
latency periods for wireless network connections can influence how quickly
users receive information that is transmitted over the wireless network.
UI Guidelines Getting started
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