Firefox 4 features include secure access to personal data across desktop and mobile devices, as well as browsing history, bookmarks and open tabs. The latest version also includes Firefox Sync, which allows passwords and form data to be shared across computers and mobile devices.
"Firefox for mobile is built on the same technology platform as the desktop version. With modern web technologies such as HTML5, developers can build rich, interactive applications and websites," the company added.
Full information on browser features are available here.