Firefox for Android Beta
Release Notes

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

Firefox for Android Beta

November 26, 2012

Version 18.0beta, first offered to Beta channel users on November 26, 2012


  • Faster JavaScript performance via IonMonkey compiler

  • Support for Retina Display on OS X 10.7 and up

  • Preliminary support for WebRTC



  • Experience better image quality with our new HTML scaling algorithm

  • Performance improvements around tab switching


  • Developer Information
  • Support for new DOM property window.devicePixelRatio

  • Improvement in startup time through smart handling of signed extension certificates

Web Platform

  • Support for W3C touch events implemented, taking the place of MozTouch events

  • Disable insecure content loading on HTTPS pages through an about:config pref

  • Starting Firefox with -private flag incorrectly claims you are not in Private Browsing mode

  • Plugins stop rendering when the top half of the plugin is scrolled off the top of the page, in HiDPI mode

  • Certain valid WebGL drawing operations are incorrectly rejected,
    leaving incomplete rendering in affected pages


  • If you try to start Firefox using a locked profile, it will crash (see 573369)

Get the most recent version

All Firefox for Android Beta downloads