Apple’s first foldable iPhone goes on sale in a matter of weeks. While its initial reaction has been positive from the press who have seen it, regular users wonder just how durable the iPhone Duo will be. A new interview has now appeared where an Apple exec talks about exactly how well the new model will hold up.

Apple Exec Addresses iPhone Duo Screen Crease Longevity

Tom Marieb, Apple’s Vice President of Hardware Engineering, talked select British journalists at the company’s U.K. headquarters in Battersea, London, including Axel Metz from Tech Radar .

Marieb talked about a range of topics, from the capabilities of Ceramic Shield 2 to the iPhone Duo’s hinge, and how he doesn’t care to see screen protectors on iPhones.

One of the most eye-catching comments came when he was asked about the crease that lies between the two halves of the iPhone Duo’s inner display.

Why The iPhone Duo Crease Is So Hard To Spot

Initial reactions to the Duo’s screen have been very positive — and I can confirm from my own experience that the crease which has dogged every other foldable phone until now is exceptionally hard to see on the iPhone Duo, even when you’re looking for it. In fact, it’s hard to feel when you run your finger across the center.

Some of that is down to the matte-finish nano-texture display. But the worry could be that while the crease is near-invisible right now, continued use could make it more prominent.

The Secret Behind The iPhone Duo Matte Nano-Texture Finish

“In response, the Apple executive was bullish on the longevity of the Duo’s hinge and explained that the nano‑texture display should help maintain its obscurity,” Metz reported

“Hold us accountable to that, please,” Marieb replied, which is a positive and confident response. “The choice of a matte finish — apart from it being beautiful — is part of that equation. When you look at glossy displays, their specularity makes it very easy to pick up topology differences. That’s part of the reason we picked the matte finish — it’s not only beautiful in terms of preventing glare, but it’s also more forgiving of [topology] changes over time,” Marieb went on.

In truth, every user, whether press or regular member of the public, will be looking out for this if they buy an iPhone Duo. I’ll report back over time how this is holding up, only, of course, to fulfil Marieb’s request.