Create site maps & Flows?
Create output from the wireframes and test it in a mobile device emulator ?
We're currently using a mix of Macromedia Studio MX 2004, Visio and the openwave emulator, but haven't arrived at something we we can do wireframes and test the wireframes in an emulator. We approximate the size of the device layout in the wireframes, but the Product managers aren't convinced that it isn't 100% accurate. They want a way to have us quickly test a design in an emulator.