Review Firefox on iPhone / iPad privacy settings step by step, with official documentation, compatibility tradeoffs, and instructions for undoing changes.
These are iPhone and iPad app instructions. These editions normally use WebKit, but they have different privacy features and menus from Safari and from their desktop editions. Desk cannot verify the engine. Apple permits alternative engines in some regions. Safari settings do not configure every other browser app.
Keep Enhanced Tracking Protection on
Firefox → Menu → Settings → Tracking Protection
Tap the Firefox menu, then Settings.
Open Tracking Protection and keep Enhanced Tracking Protection enabled.
Review Standard and Strict. Strict blocks more content but can break parts of a site.
Firefox adds its own tracker blocking. This is separate from Apple’s device-level tracking controls.
To undo: Return to Standard, or use the shield for a specific site.