In December 2020, Apple CEO Tim Cook issued a stark warning to iPhone users regarding Facebook’s ability to track their activity across apps and websites. The warning came as Facebook criticized Apple’s upcoming privacy rules, which would require apps to request user permission before collecting data across other companies’ services.
Cook took to Twitter (now X) to defend Apple’s privacy-first approach, stating: “We believe users should have the choice over the data that is being collected about them and how it’s used. Facebook can continue to track users across apps and websites as before; App Tracking Transparency in iOS 14 will just require that they ask for your permission first.”
Apple later introduced App Tracking Transparency (ATT) with the release of iOS 14.5 in April 2021. This feature fundamentally changed how apps collect data for advertising and measurement across external services. Apps must now display a tracking permission prompt before accessing the device’s advertising identifier or using other covered tracking methods. Users who select “Ask App Not to Track” prevent the app from accessing the identifier, and they can later adjust their preferences in iPhone privacy settings.
The policy ignited a major conflict between Apple and Meta, Facebook’s parent company. Meta argued that Apple’s rules could harm businesses relying on personalized advertising, later estimating a roughly $10 billion financial impact from the privacy changes.
Cook’s 2020 statement became a pivotal moment in Apple’s broader privacy campaign. While Apple framed tracking permission as a matter of user choice, Meta viewed it as a threat to targeted advertising. The debate continues to shape mobile advertising privacy regulations worldwide.
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