Privacy and security
Learn how to protect your privacy and secure your data.
Avoid and report Mozilla tech support scams
Mozilla does not provide telephone support and does not charge for software downloads, upgrades or technical help. Learn more.
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Manage technical and interaction data collection settings in Firefox
Learn what technical and interaction data Firefox collects, how it’s used, and how to manage or opt out on desktop, Android and iOS.
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Private Browsing in Firefox for iOS
Firefox lets you browse without saving your history or cookies on your iPhone or iPad.
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Mobile - Manage Firefox data collection and privacy settings
Manage Firefox’s data collection settings on iOS and Android, including technical and interaction data, the DAU ping, crash reports, sponsored content and others.
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Manage daily usage ping data collection settings in Firefox
Learn how to manage daily usage ping data collection settings in Firefox.
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3 weeks ago
Enhanced Tracking Protection in Firefox for iOS
Firefox for iOS has a Tracking Protection feature which reduces targeted ads and helps stop advertisers from tracking your browsing.
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How do I choose what information to sync on Firefox?
Learn how to select what information (bookmarks, add-ons, browsing history and other data) to share across your devices with Firefox Sync.
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2 weeks, 2 days ago
Clear browsing history in Firefox for iOS
Clear your browsing information, like sites you've visited, autofill information and site preferences.
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Oblivious HTTP (OHTTP) explained
One of the technologies used in Firefox to enhance online privacy is Oblivious HTTP (OHTTP). Learn what it is, how it works and how it helps protect your data.
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Disable Firefox Sync on a lost phone or tablet
This article describes what you should do to prevent someone from accessing your passwords on a lost device with Firefox Sync.
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Change your two-step authentication device for your Mozilla account
What to do if you have two-factor authentication (2FA) setup on your account and need to migrate to a new device or phone.
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Set up a passcode and Face ID in Firefox for iOS
For increased security, you can choose to activate either Face ID, Touch ID, or a passcode to access your stored passwords.
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Send usage data on Firefox mobile browsers
This article describes which data is collected by Firefox for Android, Firefox for iOS, Firefox Focus and Firefox Klar.
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1 week, 6 days ago
Keep Private Browsing tabs open after exiting Firefox
Adjust Firefox settings to retain Private Tabs when exiting the app.
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How do you use Adjust in Firefox?
How Adjust is used in Firefox mobile products.
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Usage Data Changes for Firefox for iOS and Android
Firefox began collecting new usage data to support the Firefox for iOS 39 and Android 94 releases to support personalization.
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How does Firefox for iOS use the permissions it requests?
When using specific functions in Firefox, iOS asks you to grant a number of permissions. This article explains what these permissions mean and how they are used.
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