Premium
Download Firefox Fast & Private Browser 4.0b4 APK
Version: 4.0b4 (2011012615)
Package: org.mozilla.firefox
Downloads: 128
Supports installation on external storage.
Target: Android 2.0 (Eclair, API 5)
nodpi
What's new in Firefox Fast & Private Browser 4.0b4
Temporarily disabled an in-app review prompt that was incorrectly appearing at inconvenient times for some users.
Improved site compatibility on content-heavy websites.
About Firefox Fast & Private Browser 4.0b4
Take control of your internet with the Firefox browser, wherever you go. Whether you’re looking for an incognito browser, want to use a private search engine, or just need a reliable and fast web browser, Firefox delivers speed, security, and simplicity every time.
Premium
Get Firefox so your passwords, browsing history and ad blocker extensions — and the privacy and security you rely on.
What Firefox offers:
✔ A PRIVACY-FOCUSED FAST BROWSER
• Automatic tracker blocking — By default, Firefox blocks trackers and scripts such as social media trackers, cross-site cookie trackers, crypto-miners and fingerprinters.
• Enhanced tracking protection — Choose the “strict” setting as an incognito browser and get even more privacy protections with an ad blocker.
• Customize your search engine — Set your favorite private search engine as the default for convenient browsing.
• Ad blocker extensions — choose your favorite ad blocker extension to eliminate unwanted pop-ups and ads.
• Private browser mode — Search in a private tab, and your browsing history is automatically deleted from your device when you close Firefox.
• Hide Private Tabs. Private browsing mode can auto-lock when you leave, and require your face, fingerprint, or PIN to unlock.
✔ EASY-TO-USE TABS
• Find what you want with your search engine quickly — create as many tabs as you like without losing track.
• See your open tabs as thumbnails or a list view.
• See tabs from your phone on your desktop web browser and vice versa when you sync to your Mozilla account.
✔ PASSWORD MANAGEMENT
• Log into sites easily — Firefox remembers your passwords across devices when you sync to your Mozilla account.
• Firefox suggests passwords for new log-ins and stores them securely.
✔ FAST BROWSER
• Enhanced Tracking Protection automatically blocks ad trackers from following you around the web and slowing down your search engine pages.
✔ TAILORED SEARCH ENGINE OPTIONS
• Get suggestions and previously searched results in the search bar to quickly access the sites you visit most with your browser.
• Move the search bar location from the top to the bottom of the screen, making it easier to navigate with one hand.
• Use the Firefox search widget to search the web directly from your device’s home screen.
• See your recent searches on other devices for seamless searching across mobile, desktop and more.
• Turn on private browser mode to use your choice of private search engine results worry-free.
✔ CUSTOMIZE YOUR FIREFOX EXPERIENCE
• Get helpful add-on extensions, including ad blockers, block certain web pages, turbo-charge privacy settings and more with our private browser.
✔ FIREFOX HOME SCREEN
• Access your recent bookmarks and top sites and see popular articles from across the internet.
✔ SAVE BATTERY WITH DARK MODE
Switch to dark mode on your private browser anytime, reducing eye strain and prolonging your battery power.
✔ WATCH VIDEOS WHILE YOU MULTITASK
• Pop videos out and pin them on top of your screen — or switch to background play and keep the audio going while you multitask. Total control, zero interruptions.
✔ SHARE ANYTHING IN A FEW TAPS
• Share links to web pages or specific items on a page with easy, quick access to your most recently used apps.
• Share securely, whether you’re in private browser or incognito browser mode or not.
BILLIONAIRE FREE FOR 20+ YEARS
The Firefox browser was created in 2004 by Mozilla as a faster, more private browser with more customizable features than web browsers like Internet Explorer. Today, we are still not-for-profit, still not owned by any billionaires and still working to make the internet — and the time you spend on it — better. To learn more about Mozilla, please go to www.mozilla.org.
LEARN MORE
- 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 4.0b4 variants
This release may come in several variants. Consult our handy FAQ to see which download is right for you.
Version:10.0.5(2012053120) for Android 2.0+ (Eclair, API 5)
Uploaded:February 12, 2015 at 6:52AM UTC
File size:14.99 MB
Downloads:2,125
Version:10.0.2(2012021523) for Android 2.0+ (Eclair, API 5)
Uploaded:February 12, 2015 at 6:52AM UTC
File size:14.98 MB
Downloads:963
Version:10.0.1(2012020807) for Android 2.0+ (Eclair, API 5)
Uploaded:February 12, 2015 at 5:52AM UTC
File size:14.98 MB
Downloads:851
Version:10.0(2012012903) for Android 2.0+ (Eclair, API 5)
Uploaded:February 11, 2015 at 5:52AM UTC
File size:14.98 MB
Downloads:804
Version:9.0(2011121613) for Android 2.0+ (Eclair, API 5)
Uploaded:February 11, 2015 at 4:52AM UTC
File size:14.71 MB
Downloads:4,455
Version:4.0b4(2011012615) for Android 2.0+ (Eclair, API 5)
Uploaded:January 13, 2013 at 6:02PM UTC
File size:11.98 MB
Downloads:128
Version:6.0.2(2011090214) for Android 2.0+ (Eclair, API 5)
Uploaded:July 24, 2012 at 7:30AM UTC
File size:14.35 MB
Downloads:573
Version:4.0b3(2) for Android 2.0+ (Eclair, API 5)
Uploaded:July 3, 2012 at 11:44AM UTC
File size:13.42 MB
Downloads:117
Version:4.0(2011031811) for Android 2.0+ (Eclair, API 5)
Uploaded:November 8, 2011 at 3:32AM UTC
File size:13.84 MB
Downloads:129
Version:6.0(2011081117) for Android 2.0+ (Eclair, API 5)
Uploaded:October 9, 2011 at 9:47PM UTC
File size:14.34 MB
Downloads:2,217
Version:154.0.1
Uploaded:August 26, 2026 at 2:17AM UTC
File size:124.11 MB
Downloads:3,928
Version:154.0
Uploaded:August 20, 2026 at 11:15PM UTC
File size:64.82 MB
Downloads:2,862
Version:153.0.4
Uploaded:August 13, 2026 at 5:02AM UTC
File size:123.38 MB
Downloads:3,660
Version:153.0.3
Uploaded:August 9, 2026 at 4:50PM UTC
File size:123.37 MB
Downloads:3,455
Version:153.0.2
Uploaded:July 31, 2026 at 8:46PM UTC
File size:123.33 MB
Downloads:2,736
Version:153.0.1
Uploaded:July 31, 2026 at 8:46PM UTC
File size:123.27 MB
Downloads:1,002
Version:153.0
Uploaded:July 23, 2026 at 10:48PM UTC
File size:123.27 MB
Downloads:3,813
Version:152.0.6
Uploaded:July 22, 2026 at 5:04PM UTC
File size:122.54 MB
Downloads:3,127
Version:152.0.5
Uploaded:July 8, 2026 at 11:18AM UTC
File size:122.53 MB
Downloads:4,050
Version:152.0.4
Uploaded:July 1, 2026 at 8:48PM UTC
File size:125.19 MB
Downloads:2,955
