The decision to create a subforum is dependent on a number of factors, mostly how common/popular a particular device is. There are so many different Android devices that it's unfeasible to have a separate subforum for each one. In addition, there have been plans to upgrade the forum software platform for a while, and the higher-ups essentially put a moratorium on creating new subforums until that upgrade can be completed.
I moved this to the Site Feedback forum for more specific traffic.