Firefox for Android
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 Release

January 26, 2021

Version 85.0, first offered to Release channel users on January 26, 2021

We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox.


  • Firefox now protects you from supercookies, a type of tracker that can stay hidden in your browser and track you online, even after you clear cookies. By isolating supercookies, Firefox prevents them from tracking your web browsing from one site to the next.


  • Various security fixes.

  • Fullscreen video now correctly matches the video size to screen size. Previously fullscreen videos were displayed larger than the screen size resulting in videos that were cut off.

Get the most recent version

All Firefox for Android downloads