What's new in Firefox Fast & Private Browser 4.0b5

Temporarily disabled an in-app review prompt that was incorrectly appearing at inconvenient times for some users.
Improved site compatibility on content-heavy websites.

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About Firefox Fast & Private Browser 4.0b5

Firefox Fast & Private Browser 4.0b5 Play Store screenshots (8)

Download Firefox Fast & Private Browser 4.0b5

This release may come in several variants. Consult our handy FAQ to see which download is right for you.

Variant
Arch
Version
DPI
4.0b5 APK
2011021713
March 15, 2011
armeabi-v7a
Android 2.0+
nodpi
All Releases
Firefox Fast & Private Browser 159.0.1

Version:159.0.1

Uploaded:November 4, 2026 at 6:16PM UTC

File size:124.77 MB

Downloads:2,504

Firefox Fast & Private Browser 159.0

Version:159.0

Uploaded:October 27, 2026 at 5:53PM UTC

File size:124.63 MB

Downloads:6,170

Firefox Fast & Private Browser 158.0.2

Version:158.0.2

Uploaded:October 21, 2026 at 8:56AM UTC

File size:66.82 MB

Downloads:4,139

Firefox Fast & Private Browser 158.0.1

Version:158.0.1

Uploaded:October 21, 2026 at 7:03AM UTC

File size:66.82 MB

Downloads:221

Firefox Fast & Private Browser 158.0

Version:158.0

Uploaded:October 16, 2026 at 9:21AM UTC

File size:125.94 MB

Downloads:5,084

Firefox Fast & Private Browser 157.0.1

Version:157.0.1

Uploaded:October 7, 2026 at 6:57PM UTC

File size:66.32 MB

Downloads:3,506

Firefox Fast & Private Browser 157.0

Version:157.0

Uploaded:October 6, 2026 at 6:09AM UTC

File size:66.31 MB

Downloads:5,183

Firefox Fast & Private Browser 156.0.1

Version:156.0.1

Uploaded:September 26, 2026 at 7:39AM UTC

File size:127.34 MB

Downloads:2,638

Firefox Fast & Private Browser 156.0

Version:156.0

Uploaded:September 18, 2026 at 7:54AM UTC

File size:127.10 MB

Downloads:2,429

Firefox Fast & Private Browser 155.0.1

Version:155.0.1

Uploaded:September 9, 2026 at 7:18AM UTC

File size:126.92 MB

Downloads:5,617

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