1. Is due to third-party cookie disablement that has been made by all browsers. Since Facebook's JavaScript is a third party site it no longer gets cookies as i

1. Is due to third-party cookie disablement that has been made by all browsers. Since Facebook's JavaScript is a third party site it no longer gets cookies as if you were logged in, so they can't track you. This is not Apple specific. 2. Within the Facebook app if you click a link and make a purchase they can absolutely still track you. If you click a link and open it in Safari, they can still track you. If however you see an ad on Facebook and search for it in your browser without clicking any links then Facebook can't track you, do to third party cookies being disabled.