Since its launch, some iPhone Duo owners and durability testers have posted videos showing screen cracks that follow the device’s central folding line. The reports have sparked worries about how durable the new foldable phone really is.

Apple has confirmed that it is aware of the cracked‑screen reports. The company told affected owners to get in touch with AppleCare for help, and AppleInsider said that only four iPhone Duo units had been returned to 20 Genius Bar locations by October 26.

Fine M‑Tec, the supplier that makes internal hinges and metal support plates for foldable displays, released a statement on October 26 saying its components did not cause the damage. The company also warned it could pursue legal action against people who make unsubstantiated accusations.

The visible cracks often start at a specific point along the central fold, which some analysts think might involve an internal hinge plate. However, the exact reason for the damage has not been proven, and the hypothesis remains unconfirmed.

For iPhone Duo users, the immediate takeaway is that warranty support through AppleCare is the only reliable way to address a cracked screen, while the true cause of the problem may take more time to identify. Until then, owners should stay informed and handle the device carefully.