What's new in Firefox Nightly for Developers 1.3.0

Thank you for testing Firefox Preview. Now you can send a tab or a Collection of tabs from > your phone to your other Firefox connected devices! This update also includes enhancements to private browsing and dark mode, along with usability and stability bug fixes.

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About Firefox Nightly for Developers 1.3.0

Firefox Nightly for Developers 1.3.0 Play Store screenshots (4)

Screenshots from version 158.0a1

Download Firefox Nightly for Developers 1.3.0

This release comes in several variants (we currently have 4). Consult our handy FAQ to see which download is right for you.

Variant
Arch
Version
DPI
1.3.0 APK
12321502
August 21, 2019
armeabi-v7a
Android 5.0+
nodpi
1.3.0 APK
12321503
August 21, 2019
arm64-v8a
Android 5.0+
nodpi
1.3.0 APK
12321504
August 21, 2019
x86
Android 5.0+
nodpi
1.3.0 APK
12321505
August 21, 2019
x86_64
Android 5.0+
nodpi
All Releases
Firefox Nightly for Developers 158.0a1

Version:158.0a1

Uploaded:September 15, 2026 at 12:43PM UTC

File size:67.07 MB

Downloads:199

Firefox Nightly for Developers 157.0a1

Version:157.0a1

Uploaded:September 10, 2026 at 4:40AM UTC

File size:48.14 MB

Downloads:440

Firefox Nightly for Developers 156.0a1

Version:156.0a1

Uploaded:August 28, 2026 at 7:42PM UTC

File size:47.84 MB

Downloads:383

Firefox Nightly for Developers 155.0a1

Version:155.0a1

Uploaded:August 13, 2026 at 1:25PM UTC

File size:48.15 MB

Downloads:868

Version:154.0a1

Uploaded:July 20, 2026 at 5:02PM UTC

File size:66.41 MB

Downloads:1,547

Version:153.0a1

Uploaded:June 15, 2026 at 2:12PM UTC

File size:65.26 MB

Downloads:1,478

Version:152.0a1

Uploaded:May 18, 2026 at 2:18PM UTC

File size:62.75 MB

Downloads:1,367

Version:151.0a1

Uploaded:April 20, 2026 at 1:22PM UTC

File size:59.06 MB

Downloads:1,601

Version:150.0a1

Uploaded:March 23, 2026 at 11:36AM UTC

File size:58.14 MB

Downloads:1,414

Firefox Nightly for Developers 149.0a1

Version:149.0a1

Uploaded:February 23, 2026 at 1:04PM UTC

File size:57.05 MB

Downloads:2,551

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