A growing controversy has emerged among iPhone 17 Pro users, with some noticing their Cosmic Orange models turning pink, leading to a viral debate dubbed “Colorgate” on Reddit. While Apple has yet to comment on the issue, early analysis suggests the discoloration may be linked to the chemical properties of the device’s anodized titanium finish and users’ cleaning habits, rather than a hardware defect.
Several users have reported that their once vibrant orange iPhone 17 Pro units have gradually shifted to a reddish-pink hue. Though the number of affected devices is relatively small, the phenomenon has gained significant attention online, prompting many to speculate about the cause.
The Science Behind iPhone 17 Pro’s Anodized Titanium Finish
The iPhone 17 Pro and 17 Pro Max feature a titanium chassis with an anodized finish, designed to provide a durable, non-porous surface. However, unlike the aluminum bodies of earlier iPhone models, titanium reacts differently to color dyes. While aluminum absorbs dye more readily, titanium’s denser structure results in more vivid but potentially sensitive colors, such as the Cosmic Orange and Deep Blue tones used in the latest models.
This enhanced coloring process creates richer hues, but also makes the finish more susceptible to damage from certain chemicals. Apple has not yet made an official statement regarding the color shift, but experts believe that the use of harsh cleaning agents might be contributing to the issue.
The Role of Hydrogen Peroxide
One possible explanation for the discoloration emerged from a 2013 technical post by Mark Jazefowicz, VP of Technical Services at Reliant Aluminum Products. Jazefowicz explained that hydrogen peroxide, commonly found in some disinfectants, can cause fading or discoloration on anodized aluminum finishes if exposed to it repeatedly.
Interestingly, Apple’s own cleaning guidelines warn users against using any products containing bleach or hydrogen peroxide. Instead, the company recommends using wipes with up to 70% isopropyl alcohol or 75% ethyl alcohol for cleaning. While Apple doesn’t explicitly state the reason behind this warning, the science suggests that hydrogen peroxide could be damaging the dye molecules used in the anodization process, leading to fading or color shifts — possibly explaining the issues with the Cosmic Orange iPhones.
No Widespread Pattern, But Concerns Grow
While “Colorgate” has made headlines, there is no confirmed widespread pattern of the issue, with most reports focusing on Cosmic Orange units. The controversy has drawn comparisons to previous iPhone issues, such as “scratchgate” or battery drain complaints, but this time, the cause appears to be linked to the device’s finish and not an inherent flaw in the hardware itself.
Some users have speculated that UV light or heat exposure might accelerate the fading, though no definitive connection has been established.
Apple’s Response and What Users Can Do
Apple has not yet publicly acknowledged the issue or launched an investigation into “Colorgate.” However, the company’s cleaning recommendations provide indirect clues that improper cleaning techniques may be to blame. For now, experts advise sticking to Apple-approved cleaning wipes and avoiding products containing peroxide or bleach, as these could further damage the device’s finish.
As the debate continues to grow online, iPhone 17 Pro owners eagerly await any official clarification from Apple, hoping for an explanation of the mysterious pink tint or a confirmation that it is merely a result of chemical reactions rather than a design flaw.