How to get the "unknown part" message off of my iPhone 11?
How to get the unknown part message off your phone? iPhone 11
[Re-Titled by Moderator]
iPhone 11, iOS 15
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Did you change the display with one not from Apple? If yes, you can't but it might stop in the future. Make sure you have True Tone turned off. If you do have an Apple display unit click on the Get Support link at the top right of this page to contact Apple Support.