All browsers in iOS 14 have now the WebKit’s Intelligent Tracking Prevention (ITP) activated by default. Apple this week enabled users to select a default browser other than Safari, but Apple is still keeping control of all browsers via the App Store guidelines.
Browers in iOS need the WKWebView due to the App Store guidelines. WKWebView contains WebKit’s Intelligent Tracking Preventions (ITP) activated by default.
WebKit’s Intelligent Tracking Preventions on all browsers means that all third-party cookies are blocked. ITP caps the expiry of all cookies created in JavaScript to 7 days and deletes all other script-writeable storage after 7 days of no user interaction with the website. ITP detects such link decoration and caps the expiry of cookies created in JavaScript on the landing webpage to 24 hours. ITP also detects 3rd-party CNAME cloaking.
Google this week asked publishers if it can deploy first-party cookies on their websites. Firts-party cookies enable Google to do display ads with a frequency cap.
Last month, Google introduced Modeled Conversions in DV360. Modeled Conversions are enabled by default in Google’s DSP DV360. Google says the conversions are inferred for browsers when there isn't direct conversion tracking information available.