iFixit has offered a possible explanation for the display failures reported on some iPhone Duo units, after stripping the foldable down and rebuilding its hinge as a computer model from CT scans. The teardown, published on 25 October, stops short of proving a design fault.
The teardown finds a hinge trade-off
According to the investigation, the failure sites owners described cluster around a transition area beside the hinge support. In one simulation, a support that does not drop far enough can press on the panel while the phone folds. The team is explicit that this does not establish the cause of every case.
iFixit gave the phone a provisional repairability score of 5 out of 10, crediting relatively easy access to both batteries and penalising how hard the inner display and the hinge are to reach. A powder test also found material reaching moving parts, though the team notes the exercise is not an IP certification test.
Read this as a repair cost signal rather than a failure rate. Without a defect percentage no owner can predict whether a given unit is affected, and the report does not claim a widespread recall.
