Its surface is equally as hard as other anodized Apple products; however, its high shine may show fine micro-abrasions with use. If you are concerned about this, we suggest you use one of the many cases available to protect your iPhone.
Some 2014 iPhone 6 and 6 Plus develop a small grey flickering band at the top of the screen always just below the phone speaker regardless of device orientation. The clearly abnormal band can be sporadic, may respond to torquing or pressing on the device.
The band will sometimes extend further down the screen over time, coupled with touch sensitivity and device response to the touch getting progressively worse.
Colloquially called "touch disease," the issue appears to stem from failure of the chips that translate the user's touch to information the iPhone can use. These controller chips are sometimes failing outright, and in other cases the microscopic solder joints connecting each chip to the motherboard are breaking, causing the progressive failures.
Ah I see, its not in the OP but I eventually found it at the bottom of the tech specs on the site
Doesn't affect me "too" much because I'm not replacing my 6S but I'm kind of too invested in the ecosystem to get anything else next year (that's how they get ya). Damned if I'm buying wireless headphones at the same time though