This feature called “Tracking Protection”. So, on iPhone I found only way to turn than on, by default it is enabled. Tap three lines at the right corner under all page and go to the Settings, then find and go to the “Tracking Protection” in Privacy section . Tracking Protection in Firefox for iOS This feature requires iOS version 11: Please make sure you are running the latest version of iOS to enjoy this feature. Firefox for iOS has a Tracking Protection feature that uses a list provided by Disconnect to identify and block trackers. Turning Tracking Protection on or off is easy and you can do it for individual websites too. Table of Contents Turn Tracking Protection on or off Turn Tracking Protection off for specific websites only Temporarily disable Tracking Protection for a website Turn Tracking Protection off or on in normal or private mode Turn Tracking Protection on or off Tracking Protection is enabled by default for additional privacy. To turn it on or off for all websites in just a tap: tracking protection menu Tap the menu button PhotonMenuButton at the bottom of the screen on your iPhone or at the top right of the screen on your iPad. (You might need to scroll all the way to the top of the page for the menu button to appear). Tap the switch next to Tracking Protection to turn it off or on switchonios . Turn Tracking Protection off for specific websites only By long-pressing the URL bar or tapping the shield icon you can see how many trackers a website has, and choose to disable Tracking Protection for specific websites only. whitelist tracking protection Long-press the shield icon FirefoxShieldIcon or URL bar. Tap Tracking Protection. A panel will show you the types of trackers on that page. Tap to enable or disable Tracking Protection. Temporarily disable Tracking Protection for a website If you having problems with a site loading, you can quickly and temporarily disable Tracking Protection for the current tab by long-pressing the refresh button. refresh ios . Turn Tracking Protection off or on in normal or private mode Follow these steps to turn it off or on in either normal browsing or private mode. Tap the menu button at the bottom of the screen on your iPhone or at the top right of the screen on your iPad. (You might need to scroll all the way to the top of the page for the menu button to appear). Tap the Settings icon in the menu panel at the bottom of the screen. (You might need to swipe to the next panel first.) Scroll to the Privacy section and tap Tracking Protection. tracking protection ios Tap the switch next to the mode you want to change (blue means enabled): Normal Browsing Mode: Turn Tracking Protection off or on in regular browsing. Private Browsing Mode: Turn Tracking Protection off or on for private tabs only. Read more about tracking and the standards Disconnect uses to create its list. Learn more about the lists used by Firefox for iOS for Tracking Protection. Was this article helpful? // These fine people helped write this article:Tonnes, Roland Tanglao, Joni. You can help too - find out how. Last Update: 2018-04-06