· Works with your favorite sites because it’s built on the same browser engine as Firefox for the desktop
· Awesome Bar gets you to your favorite websites with minimal typing
· Seamlessly synchronizes your Firefox tabs, history, bookmarks and passwords between your desktop and mobile
· Location-Aware Browsing gives you info and maps relevant to your locale
· Tabbed browsing with thumbnail images
· One-touch bookmarking
· The first mobile Web browser to support add-ons that anyone can build and distribute to add new features and user experiences
· Fast JavaScript engine, using Mozilla's "TraceMonkey" just-in-time compiler
· Instant Web site ID and customized security settings for safe browsing
· Available in more than 35 languages and counting

What's New in This Release:

· New: Switch between any of Firefox for Android's 55 supported languages without leaving the browser
· New: Clear History control added to the history panel
· New: Gamepad API finalized and enabled
· New: New HTTP cache provides improved performance including crash recovery   

What's New in 8.0 Alpha 2:

· Master Password Support (#mobilemasterpassword): The Master Password Support feature helps users encrypt saved usernames and passwords for better security. Users only need one master password
· To activate Master Password Support on Android, go to “Preferences” and select the “Use Master Password” check box.
· Add Bookmarks to Your Home Screen: Users can now bookmark any website and add it to their Android Home Screen. From the Home Screen, the user can launch the bookmarked website with one click.

What's New in 6.0:

· Improvements to stability, including fixes for the HTC Desire S
· Improvements to the user interface for localized builds
· Improvements to panning performance

What's New in 1.1 / 4.0 RC1:

Add-ons:
· There are now over 150 add-ons for Firefox for mobile, and counting. Dozens of add-ons are already compatible with our latest browser version.

Performance and Memory Usage:
· We improved startup speed even more (compared to previous Beta versions). This was a top user request.
· Improved page load speed
· Scrolling and page rendering are significantly faster and much smoother, showing far less checkerboarding. Smarter page rendering and page loading algorithms led to this very visible improvement.
· JavaScript is faster - our benchmarks show additional performance improvement compared to previous Beta releases.
· Reducing memory and optimizing CPU usage are ongoing themes. We have been working on improvements in this area to make the browser more responsive and stable. Overall responsiveness has improved. With this version, we have implemented additional optimizations that speed up the browser and make it much more responsive, especially when using Firefox Sync.

User Interface:
· Filling out forms is now easier than ever with our improved Form Assistant: tapping into form fields zooms you in swiftly and shows a list of suggested values to make navigation easy and to minimize typing. This is particularly useful when using Firefox Sync, which helps synchronize form data like user names and passwords (and also bookmarks, browsing history) across your connected devices, so you never have to type a user / password or other form fill data twice. The new controls make it very easy to fill in forms in web pages.
· It is now easier to close the sidebars without accidentally reopening them.
· We now support copy and paste for all form fields on web pages.
· We fixed miscellaneous bugs, introduced usability improvements, and optimized the user experience with this release. Firefox 4 for mobile Release Candidate is also more stable than previous versions.
· Japanese is now included in the default set of languages for the Firefox user interface.

For developers:
· NOW is the time to build new awesome add-on or to make all your mobile add-ons compatible with our Release Candidate. Our interfaces are all stable, we don't expect any changes for our final release that would impace add-ons. Go! Find all the tools and resources you need on our Developer Hub
· Firefox 4 (RC) adds support for IPv6 on Android.
· The "overflow: scroll" and "overflow: auto" CSS properties are now supported.

What's New in 1.1 / 4.0 Beta 5:

Performance and Memory Usage:
· We improved startup speed even more (compared to Beta 3 and Beta 4). This was a top request from Beta 3 users.
· Improved page load speed
· Firefox will now move its profile data to the SD card when you move the application to the SD card on Android 2.2 or higher
· Scrolling and page rendering are faster and smoother
· JavaScript is faster - our benchmarks show additional performance improvement in Beta 5 compared to Beta 4.
· Reducing memory and optimizing CPU usage are ongoing themes. We have been working on improvements in this area to make the browser more responsive and stable. Overall responsiveness has improved.

User Interface:
· No major changes in this release compared to Beta 4, as we focused mostly on stability, usability, and performance

What's New in 1.1 / 4.0 Beta 4:

Add-ons:
· There are now over 100 add-ons for Firefox for Mobile, and counting.

Performance and Memory Usage:
· Startup speed has improved visibly. This was a top request from Beta 3 users.
· JavaScript is much faster - almost 15% performance improvement in Beta 4 compared to Beta 3.
· Memory and CPU usage is reduced, making the browser more responsive and stable.

Android:
· Fixed several keyboard issues (top feedback from Beta 3)
· Improved support for tablets (like the Samsung Galaxy Tab) and small-screen devices (like the Motorola Droid Pro)

Firefox Sync:
· Improved user interface for easy connection with desktop Firefox

User Interface:
· Added an option to resize text to fit the screen when you double-tap to zoom in, to optimize the reading experience. This feature can be activated in the Firefox preferences. (This is also based on top feedback from Beta 3 users.)
· Many miscellaneous bug fixes, usability improvements, and optimizations for a better experience

For developers:
· Support for restartless add-ons
· Support for HTML5 online/offline events

What's New in 1.1 / 4.0 Beta 3:

Android:
· Improved support for Android keyboards, both hardware and on-screen
· New Android-style menus
· Fixed a bug in opening links from other apps
· Support for uploading files
· "Save as PDF" command in the site menu
· Fixed rendering of Arabic and Farsi text (on devices with Arabic/Farsi fonts installed)

Firefox Sync:
· New UI for simpler setup
· Support for custom Firefox Sync servers

Video:
· Full-screen open video
· Improved audio performance

User interface:
· Copy/paste in URL bar
· Search engines appear in the awesomescreen as you type
· Browse recommended add-ons through the add-on manager

For developers:
· localStorage API
· orientation events (new on Android)

Support:
· Crash reporting for crashes in web content

What's New in 1.1 / 4.0 Beta 2:
·Reduced install size by 60% on Android
· JavaScript performance is improved. Now 25% faster than stock browser on SunSpider.
· Page loads are now around 40% faster than in beta 1
· Battery usage has been reduced
· Fixed problems that would cause you to get a black screen when launching the app
· Reduced memory footprint
· Improved text spacing
· Now localized in 10 languages
· New theme
· You can now undo closing a tab
· The native Android sharing system is now used when you share a link
· Desktop notifications are now supported
· Finger friendly video controls
· Content crashes will no longer take down the whole browser
· Users will now be prompted to submit crash reports when the browser crashes
· Beta tester tools for Android
· Faster and more accurate multitouch zoom
· Geolocation now works on Android