Designing an icon for your BlackBerry smartphone application lets you showcase your app to BlackBerry device users. In the BlackBerry World storefront, an icon is the first introduction that users have to your app. The icon also appears on the home screen as a way for users to open your app.
Your icon is placed on a transparent tile automatically, and the application name label appears below the icon.
For devices with a screen resolution of 720 x 720 pixels, or 768 x 1280 pixels create an icon that is 114 x 114 pixels.
For devices with a screen resolution of 720 x 1280 pixels create an icon that is 94 x 94 pixels.
Focus on a single iconic metaphor that clearly represents the application. Think of your icon as a road sign that people understand quickly.
Use a silhouette to differentiate your icon from other icons.
Try to maintain consistency with other BlackBerry application icons in scale and volume.
App icons are based on basic shapes. Most of the squares, circles, and rectangles used in the UI have exactly the same size and proportions as the shapes you see below.
Perspective and lighting
The icons are designed to look as if they are hanging on a wall at eye level.
The lighting in the BlackBerry 10 UI is designed at a 90 degree, top-down angle.
Distance: 2 pixels
Size: 2 pixels
Angle: 90 degrees
If you want to allow room for a drop shadow or outer glow, create an icon that is 106 x 106 pixels.
If you use a symbol in your icon, make it the same size as the symbols in other BlackBerry application icons.
Limit the number of colors that you use in your icon. The colors shown here are used in BlackBerry application icons.
Use a 5-pixel stroke where appropriate, so that icons are easily visible on the home screen.
Using visual elements like strokes consistently helps your icon fit in with the BlackBerry application icons.
Most of the app icons are created using the four materials you see below. Limiting the number of materials and using them consistently will help unify your application icon with the core BlackBerry application icons.
Use materials appropriately. For example, if your icon is made of paper, don't give it a glossy finish.