> Only about 9% of Safari users on an iPhone allow outside companies to track where they go on the web > In comparison, 79% of people who use Google’s Chrome browser allow advertisers to track their browsing habits on mobile devices through cookies. Something to keep in mind the next time you see someone from Google complaining about how Apple won’t allow Google Chrome to run natively on the iPhone.
Apple forces Firefox/chrome to use their crippled engine but that has nothing to do with the parts that do the tracking.
For the record, Firefox has built-in anti tracker which is enabled by default and they do that on all platforms. And don't forgot the privacy enhancements Samsung added to their browser years ago.