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Firefox Notes (First offered to release channel users on April 11, 2013)

Check out "What’s New" and "Known Issues" for this version of Firefox for mobile below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla. We'd also like extend a special thank you to all of the new Mozillians who contributed to Firefox 20!

If interested, please see the complete list of changes in this release.

What’s New

  • FIXED
    20.0.1 update to fix ANR hangs and DB-lock related crashes on older devices
  • NEW
    Per-tab private browsing
  • NEW
    Gingerbread and Honeycomb support for H.264/AAC/MP3 hardware decoders
  • NEW
    Top Sites in about:home are now customizable
  • CHANGED
    The 'Quit' menu item has been removed from Firefox versions running on ICS and higher to follow Android convention. When done browsing just tap Home or Back. Use the QuitNow add-on if you want more control
  • CHANGED
    System requirements have been lowered to 384MB of RAM and QVGA displays
  • DEVELOPER
    Continued implementation of draft ECMAScript 6 - clear() and Math.imul
  • HTML5
    <canvas> now supports blend modes
  • HTML5
    Various <audio> and <video> improvements
  • FIXED
    hide virtual keyboard when bookmarks list is opened (808408)
  • FIXED
    Black area near tabs button after the URL bar is animated (817828)
  • FIXED
    Tablets - home tab thumbnails may appear cut off (824483)
  • FIXED
    20.0.1: Security fixes can be found here

Known Issues

  • Unresolved
    Some recent changes in the Google layout and CSS may cause issues in non-webkit browsers like Firefox (see 668288)
  • Unresolved
    Firefox for Android uses the same locale as your system language settings (see 695565)
  • Unresolved
    Font inflation may sometimes render inconsistent font sizes on certain pages (see 707195)
  • Unresolved
    Firefox Sync will not behave as expected if multiple Firefox channels are installed on a single device (see 761206)
  • Unresolved
    'Video can't be played because the file is corrupt' on some HTC Gingerbread (Android 2.3) devices (see 829454)
  • Unresolved
    Private Browsing - can't see URL bar text on variant of HTC Sense UI (Froyo) (see 833351)