Facebook's worst fears have been realised over Apple's new iOS 14.5 software upgrade, which allows iPhone and iPad users to opt-out of ads that track their online activity.
Flurry Analytics - a company owned by US telco Verizon, which monitors app usage on 1 million phones, says that so far only 5 per cent of US users and 13 per cent worldwide have opted-in to tracking since April 25.
That's despite a Facebook opt-in/opt-out splash screen introducing the change (see below) that says "Help keep Facebook free of charge" - which seems to be a veiled warning that Facebook might have to introduce charges as an alternative revenue generation method if ads are blocked. In fact, there are no charges for those who opt-out, and Facebook has repeatedly said it will never charge users.
(There are two screens involved in any app's opt-in message - the first from the app's maker, where they make their pitch to track you around the web, the second a simple Ask App Not to Track/Allow pop-up from Apple.)