Apple’s upcoming foldable iPhone Duo is reportedly experiencing production challenges ahead of its planned launch, with early assembly output limited by low yields and delays in key parts. Multiple outlets, citing China’s Jiemian News and supply-chain sources, say Foxconn’s final assembly yield is just over 60% as of September 17, and that the line requires repeated adjustments to reach stable, mature production.

The reported issues extend beyond the final assembly stage. Jiemian News also describes low yields, delayed deliveries, and design changes affecting Samsung Display’s foldable OLED panels, as well as hinge components. Delays in these parts shorten the time available to fine-tune manufacturing before scaling up. Other reporting says Apple tested Liquid Metal for some hinge parts before reassessing for mass production, with the hinge described as containing more than 100 components.

Outlets also differ on how quickly Apple could resolve the problems. One source quoted by MacRumors suggests it may take another six months to a year under current quality standards to mature the assembly yield. Separate commentary from another site suggests contract manufacturers are discussing a trade-off between prioritizing yield or pushing output, potentially increasing defects and scrap costs.