As far as I know there are not any mobile browsers that support hiding the browser UI automatically. I may be wrong or behind the times though, so if you find any way to do that, let me know and I can build it in. I thought the only way it was possible on iOS is to 'Add to home screen' where it will then run in Safari without any browsing UI. Alternatively you can try publishing through other platforms (CocoonJS, appMobi, PhoneGap) which wrap it in a native app and always run in fullscreen.