Apple's foldable iPhone Ultra has entered trial production with a significant breakthrough in crease-free display technology. According to Weibo leaker Instant Digital, the device has achieved a visually crease-free state with long-term stability, solving one of the major technical challenges in foldable phone development that has plagued competitors.

However, production faces a critical hurdle as the iPhone Ultra's hinge reliability consistently falls short of Apple's quality control standards. The reliability issue after prolonged, high-frequency opening and closing has caused indefinite delays in the production process, potentially threatening the device's carefully planned release timeline.

Despite the setback, the leaker maintains confidence in a September debut for the iPhone Ultra. Apple reportedly has sufficient time to resolve the hinge issue and ramp up mass production before the fall launch, assuming they can develop a satisfactory fix that meets their stringent quality requirements for their first foldable device.