It is officially known that iOS 16.3 will address an issue in which some iPhone 14 Pro Max users experienced one or many yellow lines during startup.
As previously reported, the horizontal lines appeared for an undetermined number of phone users. Apple asserted that it was a software issue, not a hardware issue, and this now looks to be validated.
The complete release notes for Apple’s iOS 16.3 developer beta state that it “fixes an issue where horizontal lines may temporarily appear while powering up iPhone 14 Pro Max.”
The current iOS 16.3 beta is a Release Candidate, and it is anticipated that the update will be made available to the public during the week of January 23, 2023.
In addition to the remedy for the horizontal lines, iOS 16.3 will have a new Unity wallpaper for Black History Month and hardware security keys to safeguard Apple IDs.