Focus on web content: tabs, bookmarking with one touch and hiding the browser menu when not in use, which helps users focus on the sites they visit;
“Amazing screen”: print less with easy access to history, bookmarks and open tabs;
saving to PDF: save important web pages (for example, routes or tickets) for viewing offline;
Spread pages: share sites with friends using email, Facebook, Twitter or Google Reader;
adding search engines: customize the list of search engines for yourself;
Firefox Sync: Use your history, bookmarks, open tabs, passwords and form data on multiple computers and mobile devices with secure end-to-end encryption.
The Firefox 4 version for Android is available in the Android Market, and the Maemo version is available at mozilla.com/m/ .