Download Firefox Nightly for Developers APK 139.0a1 Universal · Android 21+
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This is the universal build of Firefox Nightly for Developers 139.0a1. 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: 325.3 MB • Min Android: 21 • Target Android: 35 • Version code: 2016086055 • Framework: Native (Java/Kotlin) • Permissions: 33
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File Information
| Package Name | org.mozilla.fenix |
|---|---|
| Version Name | 139.0a1 |
| Version Code | 2016086055 |
| Architecture | Universal |
| Min Android Version | Android 21 (API 35) |
| Main Activity | org.mozilla.fenix.App |
| Framework | Native (Java/Kotlin) |
| File Size | 325.28 MB |
| Signature (SHA1) | 0CB59840E844E40056BA8F233DF1C764A7DB4568 |
| File Hash (SHA256) | 5de90f3dedd1eb3432215326ec7f09d5d7b28863a1da290de2ed6aed1439ccc3 |
What's New
From version
5.2.0
:
* Sort Logins
* Streamline Bookmarks/History access
*
Improved QR code scanning
* Stability and bugfixes
5.2.0
:
* Sort Logins
* Streamline Bookmarks/History access
*
Improved QR code scanning
* Stability and bugfixes
App Description
Warning: Nightly is an unstable testing and development platform. By default, Firefox Nightly automatically sends data to Mozilla — and sometimes our partners — to help us handle problems and try ideas. Learn what is shared:
www.mozilla.org/en-US/privacy/firefox/#pre-release
Firefox Nightly gets updated every day and is designed to showcase the more experimental builds of Firefox. The Nightly channel allows users to experience the newest Firefox innovations in an unstable environment and provide feedback on features and performance to help determine what makes the final release.
Found a bug? Report it at:
bugzilla.mozilla.org/enter_bug.cgi?product=Fenix
Want to know more about the permissions Firefox requests?:
mzl.la/Permissions
See our list of supported devices and latest minimum system requirements at:
www.mozilla.org/firefox/mobile/platforms/
Mozilla marketing: In order to understand the performance of certain Mozilla marketing campaigns, Firefox sends data, including a Google advertising ID, IP address, timestamp, country, language/locale, operating system, app version, to our third party vendor. Learn more by reading our Privacy Notice here:
www.mozilla.org/privacy/firefox/
Take a browse on the wild side. Be among the first to explore future releases.
www.mozilla.org/en-US/privacy/firefox/#pre-release
Firefox Nightly gets updated every day and is designed to showcase the more experimental builds of Firefox. The Nightly channel allows users to experience the newest Firefox innovations in an unstable environment and provide feedback on features and performance to help determine what makes the final release.
Found a bug? Report it at:
bugzilla.mozilla.org/enter_bug.cgi?product=Fenix
Want to know more about the permissions Firefox requests?:
mzl.la/Permissions
See our list of supported devices and latest minimum system requirements at:
www.mozilla.org/firefox/mobile/platforms/
Mozilla marketing: In order to understand the performance of certain Mozilla marketing campaigns, Firefox sends data, including a Google advertising ID, IP address, timestamp, country, language/locale, operating system, app version, to our third party vendor. Learn more by reading our Privacy Notice here:
www.mozilla.org/privacy/firefox/
Take a browse on the wild side. Be among the first to explore future releases.
Download Firefox Nightly for Developers 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.fenix.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- org.mozilla.fenix.permission.RECEIVE_DOWNLOAD_BROADCAST
APK Verified
The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way.
Other Variants
This release has multiple variants (e.g. diff architectures).
Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal UniversalSimilar in Productivity
Frequently Asked Questions about Firefox Nightly for Developers 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 35) 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.