iFixit teardown links iPhone Duo screen cracks to hinge, awards highest foldable repairability score

The teardown, published this week, comes amid reports on social media and the iPhone Duo subreddit that the device's screen fails quickly, sometimes within hours. Users describe the hinge catching, followed by an audible crack and a broken display, with cracks appearing in the same area. iFixit's investigation, covered by TechRadar, 9to5Mac, and The Verge, points to several possible mechanical causes.

iFixit found that a central support bar may not retract properly when the phone closes, putting excessive pressure on the display. Curved rails that guide the hinge's movement rise above surrounding components during folding and could interfere with the screen if they fail to move as intended. Several structural edges and components converge near the affected area, potentially concentrating stress on the display layers. iFixit did not definitively establish the cause but said the similarities between reported damage and the hinge's internal geometry offer promising leads.

A separate dissection by YouTuber CuriousHagi, reported by The Verge, reproduced the cracked screen during durability testing and found a weak spot in the hinge. The hinge consists of a gear-like central mechanism and two types of linking hinges. One link in the middle is thinner than those above and below it and snapped at a small notch. CuriousHagi also found marks where the hinge met the support plate, indicating where it may have caught.

iFixit's dust test showed some fluorescent dust reaching the hinge mechanism, enough to make it crunch, though less dust entered than in the Pixel 11 Pro Fold or Galaxy Z Fold 8. The iPhone Duo carries an IP68 rating for dust and water resistance, but iFixit noted that dust still poses a risk. The site also found the matte nano-texture cover helps mask the display crease by scattering reflections, and oval-shaped subpixels arranged at various angles further reduce artifacts. The nano-texture layer can be replaced without swapping the OLED underneath.

On repairability, iFixit highlighted the outer screen and battery cells as relatively easy to remove, and the outer trim came away intact. The inner screen's bezel can be removed without breaking because Apple used clips rather than relying entirely on adhesive. However, the main inner screen and hinge are difficult and expensive to repair due to their complex assembly. iFixit's 5/10 score is provisional pending the availability of replacement parts.

Apple did not immediately return a request for comment, The Verge reported. iFixit concluded that 'for a first attempt, Apple has done well,' citing easy battery removal as a feature it would like to see on every foldable, but warned Duo owners to 'baby that screen.'