With more than 250 million mobile users, Facebook knows that it has to be on every mobile phone in the planet to keep riding the social wave as the web becomes more mobile. And that means more than just being on iPhone and Android phones.Today, Facebook is addressing the 2,500 feature phones out there that can download Java apps with a new app called Facebook for Every Phone. It includes a lightweight News Feed, an inbox for your Facebook Messages, and a way to upload and share photos directly from your phone. You can download it at m.facebook.com.