Android and Windows Mobile give you very liberal access to low-level functionality of the OS. Windows Mobile in particular, despite all its faults, is a very f

Android and Windows Mobile give you very liberal access to low-level functionality of the OS. Windows Mobile in particular, despite all its faults, is a very flexible OS as far as what developers can do. For example, there is an app on Windows Mobile that intercepts incoming calls and does a web lookup on the phone number to display the name, address, age, and known associates of the caller. You could likely do anything you can think of with one of those, and use that as leverage to get other companies to allow you access to their OS's.