1. By default on Android it will show a title bar; by default on iOS their is no title bar.
2. On Android you can can change the title bar by declaring an ActionBar and settings it title. This does not work on iOS, still no title bar present.
3. On iOS the only way to get a title is to create a small layout variation to have a
   wrapped in a or (so you have to add two or more additional elements to the layout to have a title on iOS).
4. By default on both iOS and Android fullScreen parameter is not working (well it is consistently broken to act like it is true on both platforms). I did put a bug report in ShowModal in v1.3 #748 which I have figured out how to fix Android; but I have not bothered to dig into iOS (and probably won't). -- Patch This fixes the issue with the android Dialogs  #726 has a fix for this.

5. When you pull up the keyboard on ios it covers most of a dialog; I do believe the proper behavior is for the screen to scroll up so the fields are in focus and visible. At least it behaves properly on Android. #782