'Despite me telling my iPhone “never” to allow Facebook access to my location, despite me checking Facebook online to confirm it knows “location history for mobile devices” is set to “off.” Facebook continues to exploit a loophole, harvesting photo location tags and IP addresses, all of which it will, in its own words, “collect and process.”'
“Protecting people’s privacy,” Facebook says, “is central to how we’ve designed our ad system.” No, really, that’s what it says. Four simple steps to enhance your privacy: Say no to tracking when asked by iOS 14.5; disable location sharing for Facebook on your phone; for Facebook itself, delete the app and use a browser instead—Safari or Firefox, not Chrome; and don’t upload EXIF data unless you’re happy it’s collected.
https://www.forbes.com/sites/zakdoffman/2021/05/22/apple-user-warning-how-to-stop-facebook-secretly-tracking-your-iphone-ipad/