https://wccftech.com/iphone-11-iphone-12-iphone-se-color-fading-issues/

Some iPhone 12, iPhone 11 and 2020 iPhone SE owners are reporting about the color fading from the aluminum shell of their devices. While this is not even close to the disaster that users experienced with the bend-gate saga, it is still something to ponder upon and wonder if Apple is using an inferior technique for the paint job.

The image gallery below shows a PRODUCT(RED) ‌iPhone 12 whose color has worn out from the side, revealing an orange fade. Svetapple reports that this particular iPhone was placed in a transparent case, so it means that no friction took place that was in direct contact with the side of the iPhone. However, the problem does not appear to be limited to iPhone 12 models.