It is not possible to split existing Visual Midlet/Visual Design but It's possible to create Java ME MIDP application with more that one Visual Midlet/Visual Design class. To create application with more that one Visual Midlet/Visual Design create one Visual Midlet and use Visual Design classes to create various part of your application. To make a transition between Visual Midlet/Visual Design classes use one of the Control components like Call Point component. Add Call Point component to the Flow of your application and inside of the added component's method use switchDisplayables(null, yourNextDisplayable) to switch to another Visual Midlet/Visual Design. Control components are available in Visual Mobile Designer Palette.