iPhone Ultra — here's how Apple is reportedly erasing the crease for its foldable phone

(Image credit: Future) Seven years after Samsung made foldables a category with the troubled launch of the original Galaxy Fold, Apple is finally ready to join the race. The iPhone Ultra is expected to be unveiled at next week’s Surprise and Shine event on September 9.The foldable market has come a long way since the problem-filled early days of Fall 2019, but one thing that hasn’t been completely addressed is the visible crease where the two sides of a folding screen meet.Apple has long been rumored to be seeking to “eliminate the crease at all costs.” Here’s what we know about the company’s plans so far.Foldable creases: What’s the problem?In order to bend, foldable screens obviously require more flexibility than standard screens, typically opting for a plastic polymer or ultra-thin glass. As foldables are opened and closed, the repeated stress of bending creates a permanent crease, accelerated by the hinge mechanism that exerts pressure on the screen.You can see how this looks on the picture below, of the Honor Magic Vs. (Image credit: Tom's Guide)While a crease doesn’t impact usage, some view it as a visible eyesore, and you can sometimes feel it while touching the screen. Understandably, buyers also aren’t keen on any visual imperfections on devices that typically start in four figures, though our very own Tom Pritchard thinks the problem is overstated.How the iPhone Ultra is tackling the creaseApple is reportedly combining three different approaches to fix the problem.Sign up to the Tom's iGuide weekly newsletter with coverage on everything from product launches to software updates, this is your go-to source for the latest updates on all the best Apple content.The first is the adoption of a liquid metal hinge, which is capable of handling repeated lifetime bends while spreading the tension through the glass.The second is the panel itself. Not only does it reportedly feature two layers of ultra-thin glass to reduce the impact of a crease over time, but its thickness isn’t uniform. Instead, it’s thinner at the center where it bends the most, and thicker towards the edges to offer some impact resistance.Finally, Apple is said to be using an optically clear adhesive glue. This is designed to maintain liquid properties to fill in microscopic gaps that would eventually contribute to a visible crease.Will this make the crease invisible, or merely less obvious? The Weibo account Fixed Focus Digital claims the latter, measuring a crease of less than 0.15mm, and an angle of less than 2.5 degrees. This is obviously out of the box, and we’ll need thousands of test hours to see how this changes over time.Apple isn’t the first company to try and reduce the appearance of the crease. Samsung has been trying making progress over multiple generations, reducing it significantly with the Galaxy Z Fold 6 SE, and claiming near victory with the recent Galaxy Z Fold 8.However, our Managing Editor Jason England has found that it can creep back after repeated use. We’ll have to see if a similar fate awaits Apple’s solution.Will the iPhone Ultra hinge be reliable? (Image credit: Apple Track)Despite early reports of reliability concerns in Cupertino, it seems like things are back on track.Back in May, the leaker Instant Digital claimed that “its reliability after frequent opening and closing consistently fails to meet Apple's quality control standards,” suggesting this could cause a delay.As we’re expecting the phone imminently just four months later, we can safely assume that Apple has fixed the issue — or it was exaggerated in the first place. Indeed, Bloomberg’s Mark Gurman reports that people he’s spoken to who have had early access to the device praise the durability of the hinge.It’s worth noting that since the seventh generation, Samsung has indicated that its Galaxy Z Fold devices can be opened and closed more than 500,000 times. Assuming 100 interactions per day, that’s over ten years of use, meaning that reliability is no longer the foldable Achilles’ Heel it once was.The big reveal (Image credit: Future)Of course, all of this comes from leaks and rumors, and while the sources have been extremely reliable in the past, we won’t know for sure what Apple has in store until the iPhone Ultra is officially unveiled.Fortunately, we don’t have long to wait. The company’s Surprise and Shine event is scheduled for Wednesday September 9, at 10 a.m. PT or 1:00 p.m. ET. Expect the iPhone Ultra to be the main focus of the event, though we’ll also get a good look at the iPhone 18 Pro series and Apple Watch Series 12. Follow Tom's Guide on Google News and add us as a preferred source to get our up-to-date news, analysis, and reviews in your feeds. More from Tom's GuideiPhone Ultra rumored release date, price, colors and all the latest leaksApple Watch Ultra 4 — these are the upgrades Apple needs to make to remain the smartwatch kingiPhone 18 Pro Max rumors and leaks: Everything we know so far Freelance contributor Alan has been writing about tech for over a decade, covering phones, drones and everything in between. Previously Deputy Editor of tech site Alphr, his words are found all over the web and in the occasional magazine too. When not weighing up the pros and cons of the latest smartwatch, you'll probably find him tackling his ever-growing games backlog. He also handles all the Wordle coverage on Tom's Guide and has been playing the addictive NYT game for the last several years in an effort to keep his streak forever intact.