Faulty hinge components crack screens
iPhone Duo folding screens are cracking along the central crease due to faulty hinge components from a third-party supplier, according to leaks reported by Mobilizujeme.cz.
First reports appeared shortly after sales began on October 23. Following the noise, users noticed a raised bump beneath the display and a bright line cutting across the panel, Mobilizujeme.cz reported.
Their simulation showed that a central support piece occasionally fails to drop low enough during the closing motion, forcing the flexible display to press directly against rigid metal components, Mobilizujeme.cz reported.
Leaker Kang stated on Weibo that the damage stems from a defective batch of hinge material provided by a single manufacturer. Ice Universe shared the findings on the social media platform X, noting that affected units can be identified through their serial numbers, according to Mobilizujeme.cz.
Apple directs customers to AppleCare for hardware replacements
Apple acknowledged display issues affecting a small number of devices in a statement to Bloomberg. The company directed impacted customers to contact AppleCare for hardware replacements, though it has not disclosed the total number of defective phones or launched a widespread preventive recall program, Mobilizujeme.cz reported.
The mystery behind the iPhone Duo's hinge issues may finally be solved. According to Chinese tech insider Kang, the issue has reportedly been traced to defective materials from one of Apple's two hinge suppliers, rather than a fundamental design flaw. Apple can reportedly… pic.twitter.com/5xHSOoTJF1
“If the hinge begins to offer unusual resistance or a bump appears under the display, do not attempt to force the phone open and contact Apple support,” Mobilizujeme.cz reported.
Protective cases encroach on the screen
Accessories designed for the device present their own engineering challenges. Reviewers testing the iPhone Duo Case found that the left side of the protective shell encroaches slightly onto the screen because the internal display sits too close to the hinge, requiring a thicker frame for structural stability, Jablickar reported. It is not the Silicone Case known from classic iPhones, as users must first apply it and then go to Settings.

Common Questions About iPhone Duo Hardware Issues
How can owners identify a defective iPhone Duo unit before the screen breaks?
Leaker Kang claims that affected devices can be tracked using their specific serial numbers, allowing manufacturers to pinpoint vulnerable hardware from the faulty supplier batch before structural failure occurs, according to Mobilizujeme.cz.
What physical signs indicate immediate folding display failure?
Owners typically hear an audible snapping sound during folding, feel a noticeable lump beneath the flexible screen panel, and see a distinct bright line crossing the display surface, Mobilizujeme.cz reported.
How do protective cases attach to the folding Apple device?
The standard iPhone Duo Case requires manual alignment and adhesive attachment during setup, leaving the central hinge mechanism entirely exposed while maintaining MagSafe wireless charging compatibility, Jablickar reported.
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