Premium
Download Firefox Fast & Private Browser 40.0 APK
Target: Android 5.0 (Lollipop, API 21)
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Firefox Fast & Private Browser notes
www.mozilla.org/en-US/firefox/android/40.0/releasenotes/
What’s New
NEW
Support for Android Presentation API for screen casting
NEW
Added protection against unwanted software downloads
NEW
Long press on back/forward navigation buttons in app menu to bring up history list
CHANGED
JPEG images use less memory when scaled and can be painted faster
CHANGED
Sub-resources can no longer request HTTP authentication, thus protecting users from inadvertently disclosing login data
HTML5
IndexedDB transactions are now non-durable by default
HTML5
Implemented AudioBufferSourceNode.detune to modulate playback rate in cents, a logarithmic unit of measure used for musical intervals
DEVELOPER
Open links from Android applications in the same tab via EXTRA_APPLICATION_ID
FIXED
Various security fixes
What's new in Firefox Fast & Private Browser 40.0
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 40.0
From version 158.0:
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 40.0 variants
This release comes in several variants (we currently have 2). Consult our handy FAQ to see which download is right for you.
Version:44.0(2015396236) for Android 2.3+ (Gingerbread, API 9)
Uploaded:January 29, 2016 at 6:36AM UTC
File size:46.19 MB
Downloads:7,403
Version:42.0(2015380180) for Android 2.3+ (Gingerbread, API 9)
Uploaded:November 4, 2015 at 12:32AM UTC
File size:46.03 MB
Downloads:3,418
Version:40.0(2015080519) for Android 2.3+ (Gingerbread, API 9)
Uploaded:August 11, 2015 at 4:52PM UTC
File size:40.15 MB
Downloads:3,018
Version:39.0(2015062535) for Android 2.3+ (Gingerbread, API 9)
Uploaded:July 2, 2015 at 10:25PM UTC
File size:39.93 MB
Downloads:3,061
Version:38.0.5(2015052813) for Android 2.3+ (Gingerbread, API 9)
Uploaded:June 2, 2015 at 4:00PM UTC
File size:39.34 MB
Downloads:1,172
Version:37.0(2015032529) for Android 2.3+ (Gingerbread, API 9)
Uploaded:April 1, 2015 at 3:52AM UTC
File size:38.43 MB
Downloads:2,029
Version:35.0.1(2015020502) for Android 2.3+ (Gingerbread, API 9)
Uploaded:February 13, 2015 at 5:52AM UTC
File size:37.28 MB
Downloads:34,206
Version:35.0(2015010821) for Android 2.3+ (Gingerbread, API 9)
Uploaded:February 13, 2015 at 4:52AM UTC
File size:37.29 MB
Downloads:209
Version:34.0(2014112616) for Android 2.3+ (Gingerbread, API 9)
Uploaded:February 13, 2015 at 3:52AM UTC
File size:39.08 MB
Downloads:151
Version:33.0(2014101102) for Android 2.3+ (Gingerbread, API 9)
Uploaded:February 13, 2015 at 2:52AM UTC
File size:38.40 MB
Downloads:419
Version:158.0
Uploaded:October 16, 2026 at 9:21AM UTC
File size:125.94 MB
Downloads:1,454
Version:157.0.1
Uploaded:October 7, 2026 at 6:57PM UTC
File size:66.32 MB
Downloads:3,384
Version:157.0
Uploaded:October 6, 2026 at 6:09AM UTC
File size:66.31 MB
Downloads:5,109
Version:156.0.1
Uploaded:September 26, 2026 at 7:39AM UTC
File size:127.34 MB
Downloads:2,581
Version:156.0
Uploaded:September 18, 2026 at 7:54AM UTC
File size:127.10 MB
Downloads:2,367
Version:155.0.1
Uploaded:September 9, 2026 at 7:18AM UTC
File size:126.92 MB
Downloads:5,557
Version:155.0
Uploaded:September 3, 2026 at 8:06AM UTC
File size:64.53 MB
Downloads:1,207
Version:154.0.1
Uploaded:August 26, 2026 at 2:17AM UTC
File size:124.11 MB
Downloads:6,756
Version:154.0
Uploaded:August 20, 2026 at 11:15PM UTC
File size:64.82 MB
Downloads:3,074
Version:153.0.4
Uploaded:August 13, 2026 at 5:02AM UTC
File size:123.38 MB
Downloads:3,940
