Firefox Fast & Private Browser Icon

Download Firefox Fast & Private Browser APK 143.0 Universal · Android 21+

By Mozilla • Updated May 09, 2026
Communication Universal Native (Java/Kotlin) 331.90 MB
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This is the universal build of Firefox Fast & Private Browser 143.0. It contains native libraries for every CPU architecture (arm64-v8a, armeabi-v7a, x86, x86_64), so it installs on any Android device. The trade-off is size — it's larger than per-architecture variants. Pick this one if you're unsure which CPU your phone has, or if you plan to share the APK with multiple devices.

File size: 331.9 MB   •   Min Android: 21   •   Target Android: 36   •   Version code: 2016113383   •   Framework: Native (Java/Kotlin)   •   Permissions: 33

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File Information

Package Nameorg.mozilla.firefox
Version Name143.0
Version Code2016113383
ArchitectureUniversal
Min Android VersionAndroid 21 (API 36)
Main Activityorg.mozilla.firefox.App
FrameworkNative (Java/Kotlin)
File Size331.90 MB
Signature (SHA1)920F4876A6A57B4A6A2F4CCAF65F7D29CE26FF2C
File Hash (SHA256)60a2ab6d793051a6a6e9122d817ba2f1916e875e884fe5d2a10569005f0958d6

What's New

Thanks for choosing Firefox! Here's what's new:
New Look Menu: Simpler, faster, and easier to navigate. (Progressive rollout)
Love the app? Please rate us!
Have feedback? Let us know at
mzl.la/AndroidSupport
so we can continue to improve the Firefox app.

App Description

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.

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
Download Firefox Fast & Private Browser APK

Fast, free and safe download.

APK Permissions 33

  • android.permission.ACCESS_COARSE_LOCATION
  • android.permission.ACCESS_FINE_LOCATION
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.CAMERA
  • android.permission.CREDENTIAL_MANAGER_QUERY_CANDIDATE_CREDENTIALS
  • android.permission.CREDENTIAL_MANAGER_SET_ORIGIN
  • android.permission.DOWNLOAD_WITHOUT_NOTIFICATION
  • android.permission.FOREGROUND_SERVICE
  • android.permission.FOREGROUND_SERVICE_DATA_SYNC
  • android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK
  • android.permission.FOREGROUND_SERVICE_SPECIAL_USE
  • android.permission.HIGH_SAMPLING_RATE_SENSORS
  • android.permission.INTERNET
  • android.permission.MODIFY_AUDIO_SETTINGS
  • android.permission.POST_NOTIFICATIONS
  • android.permission.QUERY_ALL_PACKAGES
  • android.permission.READ_EXTERNAL_STORAGE
  • android.permission.READ_MEDIA_AUDIO
  • android.permission.READ_MEDIA_VISUAL_USER_SELECTED
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.RECORD_AUDIO
  • android.permission.USE_BIOMETRIC
  • android.permission.USE_FINGERPRINT
  • android.permission.VIBRATE
  • android.permission.WAKE_LOCK
  • android.permission.WRITE_EXTERNAL_STORAGE
  • com.adjust.preinstall.READ_PERMISSION
  • com.android.launcher.permission.INSTALL_SHORTCUT
  • com.google.android.c2dm.permission.RECEIVE
  • com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
  • com.google.android.gms.permission.AD_ID
  • org.mozilla.firefox.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
  • org.mozilla.firefox.permission.RECEIVE_DOWNLOAD_BROADCAST

Frequently Asked Questions about Firefox Fast & Private Browser APK

This is the universal variant — a single APK that contains native libraries for every CPU architecture. It installs on any Android device but is larger than per-architecture variants.

Yes — the APK's signature has been cryptographically verified against the publisher's signing key. The SHA-256 hash is shown in the File Information panel so you can independently confirm the file matches the original release.

Android 21 (API level 36) or newer. Older devices will refuse the install.

Install a free app like 'CPU-Z' or 'Droid Hardware Info' from the Play Store and look at the ABI / Instruction Set row. Most phones made after 2017 are arm64-v8a; if in doubt, download the universal variant.

All variants are functionally identical — same features, same version. They differ only in which CPU architectures the native code is compiled for, and (sometimes) which screen densities the included graphics target. Pick the one that matches your device for the smallest install size, or pick 'Universal' if you're unsure.