Apple’s foldable iPhone Ultra is back on track for a September reveal after earlier reports of hinge troubles threatened to push the launch into December or beyond. The problem centered on the 3D-printed hinge modules supplied by Taiwan’s Shinjuxing and US-based Amphenol. During durability testing—millions of open-and-close cycles—engineers heard a faint noise from the hinge, and some assemblies showed tolerances wider than spec, driving up defect rates. According to The Elec, both noise and tolerance issues have now been ironed out. Apple’s moved the hinge assembly into test production, a final verification phase to make sure the lines run smoothly before mass manufacturing. The company reportedly held off on a foldable iPhone until it could beat the weak spots seen in rival devices, so clearing this hurdle was a top priority. With hinge durability confirmed, analysts agree Apple will introduce its priciest iPhone yet at the September keynote and ship units soon after. Past rumors suggested delays into late 2026 or early 2027, but supply-chain insiders now see a straightforward path to the fall launch. The focus will shift from engineering fixes to ramping up volume ahead of holiday demand.