Android is a hulking beast as far as global user share is concerned — hell, it's the most-used operating system in the world, surpassing even Windows (in terms of internet usage). When Samsung announced that it was creating its own open-source alternative to Google's mobile OS, it was not really a surprise. We've had several upstarts over the years, like Sailfish, Firefox OS, Ubuntu Touch, and so on, but all of them have failed in some form or another. There were a few people, however, who thought Sammy could be the one to unseat Google and Android with a mobile operating system that it called Tizen.