iOS 17.1 contains fixes for iPhone 15 screen burn symptoms
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The release notes for the iOS 17.1 beta says that it contains a fix for an issue that might be the cause for the scattered reports of iPhone 15 screen burn-in.
Burn-in seen on an iPhone 15 Pro Max (source: “Surfphysics” on Apple Support discussion)
The release notes are clear and succinct. In the update notes, Apple says that the iOS 17.1 update “Fixes an issue that may cause display image persistence.”