Bing Maps Mobile Application Branding Guidelines
Because mobile devices come in a wide variety of screen sizes and resolutions, the best way to determine sizes for the Bing logo, is relative to a physical unit of measurement. This means the designer of your mobile application will need to provide multiple versions of the Bing logo, at varying pixel sizes and screen resolutions, according to the devices you wish to support.
When applied over Bing maps, the logo should be blue with a white outer glow placed on the bottom left-hand corner of the screen, at x/2 distance from the borders (as seen on figure 1). The logo's width (including the ™ symbol) should equal 1/5 of the smallest dimension of a screen, if the smallest dimension of your display is between 1.5" and 2.7" wide (please note that these are not the device dimensions, but simply the display dimensions). The small, medium 1 and 2 logo sizes, at their corresponding screen resolutions, apply to this scenario (see figure 2).
"Small" is the minimum size for the bing logo. So, if the smallest dimension of the screen is smaller than 1.5 inches, please use the small logo - if screen resolution is different from the ones specified for the small logo, the logo can be no smaller than 0.3" wide (see figure 3).
"Large" is the maximum physical size for the logo, when it is applied over Bing maps. So if the smallest dimension of your screen display is equal to, or bigger than 2.8", the Bing logo should be 0.57" wide. "Large" can be used specifically for the iPad (see figure 4).