The feature, dubbed Link History, will give you a rundown of all the links you've clicked on from your Facebook News Feed on mobile.
To check it out yourself: Tap any link inside the Facebook app to open Facebook's Mobile Browser. Tap the three-dot menu on the bottom right, and select Go to Settings. To turn link history on, toggle Allow link history to on and tap Allow to confirm. To turn link history off, toggle Allow link history to off and tap Don't allow to confirm.
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