Overview
- Apple has confirmed a problem that affects a small number of iPhone Duo inner displays and is providing free warranty replacements without requiring AppleCare.
- A Weibo leaker says the cracks come from defective material at one of Apple’s two hinge suppliers and claims Apple can flag affected phones by serial number, but that claim is unverified.
- At least one supplier linked in market reports has publicly denied responsibility and said it is reviewing legal options, and Apple has not named a root cause or launched a serial-number check.
- Independent teardowns and scans have pointed to stress near the hinge—for example a support bar or cable routing—as a possible failure point, and limited spare parts are constraining repairs and replacements.
- Because the Duo is a low-volume, complex foldable with tight early supply, even a small number of failures could prolong waits, raise out-of-warranty costs for owners, and harm buyer confidence while the investigation continues.