Heilmann: The Fox is out of the bag #FirefoxOS
FirefoxOS does not assume a fast, stable and always available connection. When traveling I start hating my Android phone which I love to bits otherwise. Having dozens of megabyte updates over roaming is out of the question and neither is using flaky and slow wireless connections. Firefox OS has no native apps – all of them, including the system apps are written in HTML, CSS and JavaScript. Thus they are much smaller and can have atomic updates instead of having to be replaced as a unit every single time."
