KEY POINTS
  • Facebook told advertisers in a blog post Wednesday that it's been underreporting ad performance on Apple iPhones, citing changes to the iOS operating system.
  • Facebook estimated it is underreporting web conversions on Apple's iOS by about 15%.
  • Apple's update made it so that iPhone and iPad users would have to choose to opt in to being tracked when first launching an app.

In this article

Facebook told advertisers in a blog post Wednesday it underreported ad performance on iPhones, citing privacy changes Apple made to its iOS operating system.

Facebook estimated it underreported web conversions on Apple's iOS by about 15% in the third quarter, noting there's a "broad range" for different advertisers.

In this article