Mozilla rolls out Firefox 79 for Android with Enhanced Tracking Protection, a new UI, its own mobile browser engine GeckoView, improved privacy mode, and more
After more than a year of development, Mozilla today launched Firefox 79 for Android, branded Firefox Daylight.
Context & Ripple Effects
This launch closes a loop Mozilla opened in June 2019, when it shipped Firefox Preview as a pilot of a rebuilt Android browser running on its own GeckoView engine, explicitly slated to replace the existing Firefox for Android app. After more than a year of development, that pilot is now the shipping product, rebranded Firefox Daylight as version 79.
The privacy layer has a longer lineage: tracking protection first appeared confined to private browsing in Firefox 42 back in 2015, then expanded on desktop through cryptomining and fingerprinting defenses in Firefox 67 and social tracking blocked by default in Firefox 70. Firefox 79 brings that same Enhanced Tracking Protection posture to Android for the first time.
First-order effects
- Android users get a rebuilt Firefox with Enhanced Tracking Protection on by default, a new UI, and an improved private mode, replacing the long-serving Firefox for Android app built on the old codebase.
- Mozilla now controls its entire mobile browser stack through GeckoView, decoupling Firefox's Android update cadence and feature set from the platform's system components.
Second-order effects
- Google's Chrome on Android faces a rival whose anti-tracking defaults are no longer desktop-only, sharpening the privacy contrast between the two most-installed mobile browsers.
- A GeckoView-based Firefox gives Mozilla a single modern engine codebase to extend across future Android products, instead of maintaining parallel mobile and desktop architectures.
Third-order effects
- If the pattern holds, mobile browsing shifts toward engines differentiated by privacy defaults rather than whatever the platform ships, strengthening the case for keeping a non-Chromium engine viable on phones.
- Privacy protections migrating from opt-in private modes to always-on defaults — the arc from Firefox 42 through 70 to this release — points toward tracking blocking becoming baseline user expectation across all major browsers.
The trend: Mobile browsers are converging on always-on tracking protection as a default feature, with Mozilla using its own GeckoView engine to bring Firefox's desktop privacy posture to Android.