Reddit users say the rear panel is developing discolouration around the cameras, with the Burgundy model appearing particularly affected.
Apple’s iPhone 18 Pro and iPhone 18 Pro Max have only been available for a few weeks, but users are already reporting an unusual colour-changing issue affecting the rear panel.
According to multiple reports on Reddit, the problem appears across different versions of the flagship models, although it is reportedly most noticeable on the Burgundy colour option.
Unlike ordinary marks or stains, the reported discolouration appears specifically around the three rear cameras rather than across the entire back of the phone. Users claim the change is not related to dirt, grease or physical damage, and that cleaning the affected area does not restore its original colour.
The exact cause of the issue remains unknown. However, one user has suggested that heat generated by the camera system during use could be responsible for the colour change.
The number of reports has raised concerns among owners, although it remains unclear how widespread the problem actually is. Apple has yet to publicly comment on the reported discolouration, leaving questions about whether the company considers it a manufacturing issue and whether affected customers could receive replacements.
The reports also bring back memories of a similar issue involving the orange iPhone 17 Pro. Some units from that generation reportedly experienced significant discolouration, prompting concerns among owners.
Apple eventually replaced affected iPhone 17 Pro units free of charge. However, reports suggested that the issue was less widespread than the colour changes now being reported by some iPhone 18 Pro and iPhone 18 Pro Max owners.
For now, users experiencing the issue may have to wait for an official response from Apple before knowing whether the discolouration will qualify for warranty support or replacement.
The reports come only weeks after the latest Pro models went on sale, meaning the extent and long-term impact of the issue are still unclear. Further reports from users could provide a clearer picture of whether the problem is limited to particular batches or colour variants.