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Download Firefox Nightly for Developers Nightly 201217 20:15 APK
Version: Nightly 201217 20:15 (2015781987)
Languages: 99
Package: org.mozilla.fenix
Downloads: 45
Target: Android 10 (Q, API 29)
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What's new in Firefox Nightly for Developers Nightly 201217 20:15
From version 5.2.0:
* Sort Logins
* Streamline Bookmarks/History access
* Improved QR code scanning
* Stability and bugfixes
About Firefox Nightly for Developers Nightly 201217 20:15
Please note that this app used to be titled Firefox Preview. It has now been transitioned to Firefox Nightly.
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Firefox Nightly is a developmental channel for new Mozilla Firefox releases.
Firefox Nightly 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: github.com/mozilla-mobile/fenix/issues
Firefox Nightly automatically sends feedback to Mozilla: www.mozilla.org/privacy/firefox/#telemetry
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/
Firefox Nightly for Developers Nightly 201217 20:15 screenshots (4)
Screenshots from version 156.0a1
Firefox Nightly for Developers Nightly 201217 20:15 variants
This release comes in several variants (we currently have 3). Consult our handy FAQ to see which download is right for you.
Version:131.0a1(2016036818) for Android 5.0+ (Lollipop, API 21)
Uploaded:August 8, 2024 at 6:05AM UTC
File size:100.98 MB
Downloads:1,622
Version:121.0a1(2015982690) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 29, 2023 at 6:44AM UTC
File size:93.93 MB
Downloads:149
Version:121.0a1(2015982594) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 28, 2023 at 6:22PM UTC
File size:93.92 MB
Downloads:16
Version:121.0a1(2015982498) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 28, 2023 at 6:07AM UTC
File size:93.90 MB
Downloads:23
Version:121.0a1(2015982402) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 27, 2023 at 11:52PM UTC
File size:93.86 MB
Downloads:16
Version:121.0a1(2015982306) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 27, 2023 at 6:32AM UTC
File size:93.86 MB
Downloads:27
Version:121.0a1(2015982210) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 27, 2023 at 2:24AM UTC
File size:93.72 MB
Downloads:16
Version:121.0a1(2015982114) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 26, 2023 at 7:48AM UTC
File size:93.88 MB
Downloads:22
Version:121.0a1(2015982018) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 25, 2023 at 7:21PM UTC
File size:94.00 MB
Downloads:18
Version:121.0a1(2015981922) for Android 5.0+ (Lollipop, API 21)
Uploaded:October 25, 2023 at 7:06AM UTC
File size:93.91 MB
Downloads:34
Version:156.0a1
Uploaded:August 15, 2026 at 12:32PM UTC
File size:47.84 MB
Downloads:59
Version:155.0a1
Uploaded:August 13, 2026 at 1:25PM UTC
File size:48.15 MB
Downloads:808
Version:154.0a1
Uploaded:July 20, 2026 at 5:02PM UTC
File size:66.41 MB
Downloads:1,528
Version:153.0a1
Uploaded:June 15, 2026 at 2:12PM UTC
File size:65.26 MB
Downloads:1,469
Version:152.0a1
Uploaded:May 18, 2026 at 2:18PM UTC
File size:62.75 MB
Downloads:1,333
Version:151.0a1
Uploaded:April 20, 2026 at 1:22PM UTC
File size:59.06 MB
Downloads:1,598
Version:150.0a1
Uploaded:March 23, 2026 at 11:36AM UTC
File size:58.14 MB
Downloads:1,372
Version:149.0a1
Uploaded:February 23, 2026 at 1:04PM UTC
File size:57.05 MB
Downloads:2,474
Version:148.0a1
Uploaded:January 12, 2026 at 2:44PM UTC
File size:56.34 MB
Downloads:1,482
Version:147.0a1
Uploaded:December 8, 2025 at 1:51PM UTC
File size:55.60 MB
Downloads:1,844
