Unknown component – ​​does the iPhone message cause problems?

iPhone notice Unknown component

There was another one on Reddit an interesting question. A user received an “Unknown component” message on their iPhone and is wondering if this message is a problem or could lead to problems in the future.

In the photo you can see the message in English and also the information text, which I translated says something like this: “You can't tell if your iPhone's display is a genuine Apple part. This may be because the part is not genuine, does not work as expected or the installation is incomplete.”

iPhone notice Unknown component
iPhone note: Unknown component / Photo: Round-Positive-6928/Reddit

Why does the message appear on the iPhone?

The reason for this message is a component that is not original from Apple. The message sometimes comes, for example, if you have bought a completely overhauled or refurbished iPhone or the display has not been replaced by a certified Apple workshop.

During such repairs, the new display must be “synchronized” with the iPhone, but this is only possible with tools and software available to Apple partners. If this step has not been completed, the iPhone will not be able to recognize the new replacement part and will report it with the message “Unknown component”.

What are the consequences of the “Unknown component” message?

If you are greeted with this notice, you will of course initially worry whether something is broken on the iPhone. There's actually nothing defective here, which is why it's just a note and not an error message. However, some iPhone functions may be limited. When replacing the display, the True Tone function, which whitens the display to match the ambient light, may be deactivated.

While this restriction may be acceptable to some people, I would file a complaint if the repair was at an Apple certified repair shop, as they usually have the ability to complete the repair in a way that does not cause this report.

However, it is up to each individual to decide whether they accept this information or whether they want to have their iPhone replaced or repaired again.

There is no Dynamic Island on older iPhone models, but you can clearly see the selfie camera and the speaker in the display (Photo: Sir Apfelot).
There is no Dynamic Island on older iPhone models, but you can clearly see the selfie camera and the speaker in the display (Photo: Sir Apfelot).

Check the 4 functions after replacing the display!

To be on the safe side, you should check the following functions again when replacing the display:

  • Can the display be operated as usual via touch? Are there perhaps dead areas?
  • Does the audio work when making calls (speakers at the top of the display)?
  • Does the selfie camera image look ok?
  • Does Face ID work without problems?

How to hide the notice?

This question is also often asked, because initially you get this “Unknown component” message every time you restart, which can be quite annoying. Although there is no way to hide this notice yourself, if you persist for about 2 weeks, it will automatically disappear and be suppressed by iOS.

Do you have any questions about this topic or suggestions that should be included here? Feel free to leave a comment and help other readers. Thanks!

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2 comments on “Unknown component – ​​does the iPhone message cause problems?”

  1. Thanks for the info. However, when it comes to a battery, I wonder whether the remaining capacity will be displayed again at some point. Many providers of refurbished devices advertise that the batteries installed still have a minimum capacity of x%.
    What good is it if I can't check it?

    1. Hi Michael! I can not tell you that. The Mac may “detect” the capacity if you discharge the battery once, then fully charge it and discharge it again. That's basically the procedure when you calibrate the battery. And I'm guessing that it also does this with a “third-party battery”. But: I have no idea. Never tried it. I would always have things changed at Apple.

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