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 154.0:
Premium
The internet. As it should be.
Firefox is a fast, private browser built to protect you by default. It blocks common trackers automatically, helps keep your data secure, and lets you browse with more peace of mind—without extra setup or constant decisions.
Why people choose Firefox:
✔ Enhanced Tracking Protection – Blocks trackers by default to help stop companies from following you across the web.
✔ Private browsing mode – Browse without saving your history, searches, or cookies. Private tabs lock automatically when you step away.
✔ Total Cookie Protection – Keeps tracking cookies limited to the site that created them, making cross-site tracking harder.
✔ Extensions – Add supported extensions like ad blockers and privacy tools to customize how you browse.
✔ Built-in password manager – Generate strong passwords, save them securely, and autofill logins when you need them.
✔ Flexible search options – Choose your default search engine or switch search engines right from the search bar.
✔ Reader Mode – Remove ads and clutter from articles so you can focus on what you're reading.
✔ Sync across devices – Pick up where you left off with synced tabs, bookmarks, and passwords when you sign in to your Mozilla account.
Private by default
Firefox is designed with privacy built in from the moment you start browsing. Enhanced Tracking Protection automatically blocks common background trackers, including social media trackers, crypto miners, and fingerprinters. Total Cookie Protection keeps your activity separated by site, making it harder for companies to build a profile of your browsing habits.
When you want extra privacy, private browsing mode doesn't save your history, searches, or cookies. Private tabs lock automatically when you navigate away and require your fingerprint, PIN, or device security to unlock—helping keep what you're doing private if someone else uses your phone.
Focus on what matters
The web can be distracting. Firefox is designed to help you stay focused without making you manage everything yourself. Reader Mode clears clutter from articles, and picture-in-picture keeps videos visible while you multitask—without pulling focus from what you're doing.
Browse your way
Customize Firefox to fit how you browse. Personalize your home screen with wallpapers and layout options, add extensions like ad blockers and privacy tools, and choose your preferred search engine instead of being pushed into a single ecosystem.
You can move the search bar to the top or bottom of the screen for easier one-handed browsing. Sign in to your Mozilla account to sync tabs, bookmarks, passwords, and browsing history across devices, so switching feels seamless.
Built for people, not profit
Firefox was created in 2004 by Mozilla as a faster, more private, and more customizable alternative to other browsers. Today, Mozilla remains a nonprofit and continues 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:7,377
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:3,409
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:2,996
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:3,059
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:1,164
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:2,022
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:34,181
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:207
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:148
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:154.0
Uploaded:August 20, 2026 at 11:15PM UTC
File size:64.82 MB
Downloads:2,354
Version:153.0.4
Uploaded:August 13, 2026 at 5:02AM UTC
File size:123.38 MB
Downloads:3,485
Version:153.0.3
Uploaded:August 9, 2026 at 4:50PM UTC
File size:123.37 MB
Downloads:3,377
Version:153.0.2
Uploaded:July 31, 2026 at 8:46PM UTC
File size:123.33 MB
Downloads:2,702
Version:153.0.1
Uploaded:July 31, 2026 at 8:46PM UTC
File size:123.27 MB
Downloads:973
Version:153.0
Uploaded:July 23, 2026 at 10:48PM UTC
File size:123.27 MB
Downloads:3,776
Version:152.0.6
Uploaded:July 22, 2026 at 5:04PM UTC
File size:122.54 MB
Downloads:3,099
Version:152.0.5
Uploaded:July 8, 2026 at 11:18AM UTC
File size:122.53 MB
Downloads:4,019
Version:152.0.4
Uploaded:July 1, 2026 at 8:48PM UTC
File size:125.19 MB
Downloads:2,916
Version:152.0.2
Uploaded:June 24, 2026 at 7:27PM UTC
File size:122.47 MB
Downloads:4,040
