Premium
Download Firefox Fast & Private Browser 39.0 APK
Target: Android 5.0 (Lollipop, API 21)
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Firefox Fast & Private Browser notes
www.mozilla.org/en-US/firefox/android/39.0/releasenotes/
What’s New
NEW
Paste Android clipboard content into editable web content
NEW
Support for 'switch' role in ARIA 1.1 (web accessibility)
CHANGED
Removed support for insecure SSLv3 for network communications
CHANGED
Disable use of RC4 except for temporarily whitelisted hosts
CHANGED
Sync now only uses the strongest TLS configuration available on your device. If you self-host Sync, see docs.services.mozilla.com/howtos/configure-tls.html for details.
HTML5
Enable the Fetch API by default
HTML5
List-style-type now accepts a string value
HTML5
Implement
HTML5
Cascading of CSS transitions and animations now matches the current spec
HTML5
Added support for CSS Scroll Snap Points
FIXED
Improve performance for IPv6 fallback to IPv4
FIXED
Fix incomplete downloads being marked as complete by detecting broken HTTP1.1 transfers
FIXED
Various security fixes
What's new in Firefox Fast & Private Browser 39.0
From version 10.0.5:
- Hardware accelerated AV1 video decoding now supported by default with supported hardware or via fallback to software decoding.
- GPU-accelerated Canvas2D is now enabled by default.
- UI improvements to the built-in PDF viewer to make it easier to save PDFs directly.
- Fixed a video playback bug in landscape screen orientation.
- Fixed accessibility bugs where Talkback didn't announce some buttons or text was too small.
About Firefox Fast & Private Browser 39.0
From version 157.0:
Premium
The internet. As it should be.
Firefox is a private web browser designed to protect your data, block trackers and make browsing fast, secure and simple. Whether you’re looking for an incognito browser, a private search experience, or a reliable browser for everyday use, Firefox puts you first.
Why people choose Firefox
More privacy, less tracking – Firefox automatically blocks social media trackers, cross-site cookies, crypto miners and fingerprinting scripts.
Private browsing that protects you – Open private tabs that don’t save your history, searches, or cookies. Lock them with your device security for extra protection.
Fast, smooth performance – Load pages faster by blocking trackers and reducing unnecessary data usage.
Search your way – Use your preferred private search engine or switch easily from the search bar.
Passwords made simple – Generate, store and autofill passwords securely.
Tabs that work for you – Easily organize and switch between tabs and sync them across devices to pick up where you left off.
Focus without distractions – Reader View strips away clutter, while picture-in-picture lets you multitask with videos.
Control your experience – Add extensions like ad blockers, customize settings and choose how you browse.
Make it yours – Customize your home screen, layout and shortcuts for a more personal browsing experience.
AI on your terms – Turn AI completely off or customize it feature by feature.
Quick page summaries – Shake your phone to cut through long pages and get the key points.
Sync across devices – Access your bookmarks, tabs and passwords anywhere you use Firefox.
Private by default
Firefox is built to protect you. Enhanced Tracking Protection automatically blocks common trackers, while Total Cookie Protection keeps cookies isolated to the sites where they belong. When you need more privacy, private browsing mode ensures your history, searches and cookies aren’t saved. Private tabs can also lock automatically, so your activity stays yours.
Your browser. Your rules.
Firefox puts you in charge of your internet. Add privacy or productivity extensions, including ad blockers, move your search bar, choose your default search engine and tailor your browser to how you use the web. Sync your data across devices for a seamless, consistent experience.
Focus with Firefox. Fast, secure and built around you
Firefox is designed to help you stay focused with faster, more secure browsing. Reader Mode removes clutter from articles, Picture-in-Picture keeps videos accessible while you multitask and Tracker Blocking helps pages load faster. Built-in password management and private browsing keep everyday browsing simple and protected.
Built for people, not profit
Firefox was created in 2004 by Mozilla as a faster, more private and customizable browser designed to put people first. Today, Mozilla remains a nonprofit working to make the internet — and the time you spend on it — better.
Learn more about Mozilla: www.mozilla.org
Terms of Use: www.mozilla.org/about/legal/terms/firefox/
Privacy Policy: www.mozilla.org/privacy/firefox
Latest news: blog.mozilla.org
Firefox Fast & Private Browser 39.0 variants
This release comes in several variants (we currently have 2). Consult our handy FAQ to see which download is right for you.
Version:45.0.2(2015411201) for Android 3.0+ (Honeycomb, API 11)
Uploaded:April 12, 2016 at 7:08PM UTC
File size:39.51 MB
Downloads:14,520
Version:45.0(2015404369) for Android 3.0+ (Honeycomb, API 11)
Uploaded:March 8, 2016 at 8:09PM UTC
File size:39.51 MB
Downloads:8,382
Version:44.0.2(2015400201) for Android 3.0+ (Honeycomb, API 11)
Uploaded:February 12, 2016 at 12:48AM UTC
File size:39.33 MB
Downloads:4,793
Version:44.0(2015396233) for Android 3.0+ (Honeycomb, API 11)
Uploaded:January 29, 2016 at 6:36AM UTC
File size:38.06 MB
Downloads:5,315
Version:43.0(2015389129) for Android 3.0+ (Honeycomb, API 11)
Uploaded:December 15, 2015 at 7:50PM UTC
File size:38.38 MB
Downloads:10,873
Version:42.0.2(2015386609) for Android 3.0+ (Honeycomb, API 11)
Uploaded:December 2, 2015 at 9:05PM UTC
File size:38.22 MB
Downloads:4,220
Version:42.0.1(2015384217) for Android 3.0+ (Honeycomb, API 11)
Uploaded:November 20, 2015 at 12:12AM UTC
File size:38.23 MB
Downloads:3,639
Version:42.0(2015380177) for Android 3.0+ (Honeycomb, API 11)
Uploaded:November 4, 2015 at 4:28AM UTC
File size:38.23 MB
Downloads:8,501
Version:41.0.2(2015101425) for Android 3.0+ (Honeycomb, API 11)
Uploaded:October 16, 2015 at 7:27PM UTC
File size:37.65 MB
Downloads:4,168
Version:41.0(2015091726) for Android 3.0+ (Honeycomb, API 11)
Uploaded:September 22, 2015 at 5:22PM UTC
File size:37.65 MB
Downloads:45,734
Version:157.0
Uploaded:September 27, 2026 at 7:39AM UTC
File size:66.31 MB
Downloads:2,730
Version:156.0.1
Uploaded:September 26, 2026 at 7:39AM UTC
File size:127.34 MB
Downloads:2,239
Version:156.0
Uploaded:September 18, 2026 at 7:54AM UTC
File size:127.10 MB
Downloads:2,282
Version:155.0.1
Uploaded:September 9, 2026 at 7:18AM UTC
File size:126.92 MB
Downloads:5,500
Version:155.0
Uploaded:September 3, 2026 at 8:06AM UTC
File size:64.53 MB
Downloads:1,167
Version:154.0.1
Uploaded:August 26, 2026 at 2:17AM UTC
File size:124.11 MB
Downloads:6,324
Version:154.0
Uploaded:August 20, 2026 at 11:15PM UTC
File size:64.82 MB
Downloads:3,039
Version:153.0.4
Uploaded:August 13, 2026 at 5:02AM UTC
File size:123.38 MB
Downloads:3,852
Version:153.0.3
Uploaded:August 9, 2026 at 4:50PM UTC
File size:123.37 MB
Downloads:3,522
Version:153.0.2
Uploaded:July 31, 2026 at 8:46PM UTC
File size:123.33 MB
Downloads:2,832
