iFixit identified hinge stress and dust entry as possible sources of display damage, while awarding Apple’s foldable a 5 out of 10 for repairability.
A teardown of Apple’s new iPhone Duo by repair group iFixit has pinpointed hinge stress points and fine particle entry as likely reasons for screen damage reported by early buyers, CNET reported. Even with the screen risks, iFixit ranked the handset as the most repairable folding smartphone it has dismantled, awarding the device a provisional repairability score of 5 out of 10.
Related: Apple unveils thinner iPad mini
How the screen issues surfaced
Before iFixit opened up the device, early reviews of the iPhone Duo focused on the hardware and the hinge, but complaints from buyers quickly followed. Early owners began sharing accounts on Reddit and MacRumors about display cracks and lines of malfunctioning pixels developing straight along the hinge fold.
In response to the complaints, Engadget reported that iFixit examined the hardware by combining teardown footage, Apple patents and CT scans into a three-dimensional model of the hinge to inspect where parts could fail. Meanwhile, CNET began running its own durability test, folding a Duo 900 times every hour on a custom test rig. CNET reported that the phone cleared 20,000 folds without showing any screen defects.
Why the display may be breaking
Apple designed the Duo display to fold smoothly and minimize any crease through two primary methods. First, curved guides expand when the phone shuts and pull back when it opens, while a central support bar lowers along the hinge to make space for the curved display. Second, Apple hid the crease line under a nano-texture coating and used oval pixels positioned to blur the bend, which iFixit verified under a microscope.
iFixit found that the actual fractures reported by users happened in the same area: directly beneath the cable linking the two displays, where multiple connectors meet. In 3D closing simulations, iFixit observed that the center support bar did not sink far enough down. When the screen bent inward, it pressed directly against that bar, generating a concentrated stress hotspot right where breaks were appearing.
A second issue involves dust and debris. Although the iPhone Duo carries an IP68 rating for dust resistance, iFixit found that fine particles can still slip into the hinge mechanism. While the internal electronics are sealed, the hinge itself is not protected against fine grit. When debris enters, the mechanism can make a crunching sound and press against the display panel, resulting in green vertical line damage across the screen.
Why the repair score matters
Despite the hinge vulnerabilities, iFixit gave the Duo a provisional 5 out of 10 repairability score, calling it “the most repairable foldable smartphone we’ve ever taken apart.” That mark places the Duo ahead of other folding devices, even if it falls short of the 7 out of 10 rating given to the iPhone 18 Pro and iPhone 18 Pro Max.
The group pointed to several repair-friendly engineering choices. The plastic bezel trim surrounding the display came off cleanly, unlike the trim on the Samsung Galaxy Z Fold 8, which crumbled during removal. Apple also organized internal parts on a flat layout, which allows technicians to replace individual components like the logic board and cameras without stripping down the entire phone.
Battery maintenance is also simplified. Apple used an electrically releasable adhesive that lets repairers extract the battery pack by applying a low electrical voltage. That technique avoids the need to bend or pry the cells, which prevents punctures.
iFixit still docked major points because replacing the hinge and the inner folding screen is difficult and requires extensive labor.
What happens next for repairs and costs
Owners who encounter broken screens or hinge defects right now are protected under Apple’s standard warranty. Apple has not publicly responded to requests for comment regarding the screen failures.
For future out-of-warranty accidents, Apple plans to charge $999 to replace the inner folding screen. Because of the steep replacement cost and early reports of screen defects, many buyers are choosing AppleCare+ coverage.
Apple has already published its official repair manual for the Duo. iFixit noted that its 5 out of 10 score remains provisional while it waits for Apple to make official replacement parts available to consumers and third-party repair shops. iFixit stated, “For a first attempt, Apple has done well,” while adding that it will monitor whether Apple follows through with spare parts.
