is Iphone 17 Pro Max Cosmic Orange Oxidation?

Hey there, i just curious and wanna to validate that Ip 17 promax oxidation issue that cause changing color to pink on some parts. Pls give me some fact thankyou

Posted on Oct 17, 2025 7:52 PM

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14 replies

Oct 18, 2025 10:28 AM in response to cryarkarc227

Apple-answer wrote:

Hey there, i just curious and wanna to validate that Ip 17 promax oxidation issue that cause changing color to pink on some parts. Pls give me some fact thankyou


Huh? Oxidation on an anodized finish? First of all, you likely have access to a search engine. Use it. Anodized finishes don't typically oxidize to begin with.


[Edited by Moderator]

Oct 18, 2025 5:27 AM in response to cryarkarc227

With only one report on Reddit about the alleged issue, it’s difficult to say the exact cause unless he lets Apple examine it. If the Reddit poster doesn’t submit the item for warranty repair I’m inclined to think the 4 photos are photoshopped.


In any event the orange color is the result of organic dyes used in the anodizing process. If the affected unit was not properly sealed or cooled after the dye is applied, the dye fades rapidly in exposure to UV.


I used to work in a machine shop and we would machine aluminum into parts, send them out to be anodized and then inspect the finished parts before delivery. We would occasionally see defective anodizing but it was rare. That was 45 years ago and I’m sure the process has improved immensely.

Oct 24, 2025 7:33 AM in response to marvssy

A case should not affect iPhone 17 Pro models. However, plastic cases may contain agents that prevent yellowing and prevent hardening (plasticizers) of the polymer materials. If Apple or Apple’s suppliers have not done testing of these materials and agents it’s possible a reaction may occur.

I would think the companies doing the anodizing have tested their processes and finished products for exposure to common materials and agents. Apple is unlikely to supply such information. You best path forward would be to get in touch with the manufacturer of the case(s) you’re considering purchasing and inquire about the chemical stability of their products.


I really doubt peroxide has much if any effect on anodized aluminum or aluminum oxide because of the chemical structures of each component. Peroxide is rated at 100% compatibility with aluminum for concentrations of 30% to 100%.

Dec 2, 2025 8:11 PM in response to Basskatcher48

I Googled iPhone 17 Pro earpiece discoloration and found this… I just came here after noticing the slightest, and I mean slightest, discoloration on my blue iPhone 17 pro max after removing the TechWoven case for regular cleaning (every few days).


I happened to be sitting directly under a bright light where the difference was clear to me for the first time.


I thought maybe it was dust between the screen protector and case. It wasn’t. I thought maybe it was oil. But it won’t wipe off. I used dry microfiber and modest moisture from my breath. FWIW, I never hold it to my ear since I use AirPods. It’s not damaged.


It appears like a thin silver line along 2/3 of the earpiece metal/frame above the ear speaker. It stands out because the other 1/3 is still as dark as the rest of the device. I can see it along the thin area of color you can see, even with a case on. It’s hard to describe. Very subtle. I will try to capture it in a photo. I can definitely see it though.

is Iphone 17 Pro Max Cosmic Orange Oxidation?

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