Apple has released iOS 26.4.1 for iPhone and iPad, fixing a significant iCloud syncing bug introduced in iOS 26.4. The bug prevented iPhones from receiving iCloud change notifications, breaking data sync for apps built on Apple’s CloudKit framework—including Apple Passwords and third-party apps like Drafts. The update also enables Stolen Device Protection for enterprise users by default and fixes a Settings app search indexing issue. No security patches are included.
The iCloud syncing bug on iOS 26.4 broke Apple’s own Passwords app
iPhones running iOS 26.4 were silently failing to receive iCloud change notifications. Any app built on Apple’s CloudKit framework was affected, which meant data changes made on one device weren’t showing up on others. Third-party apps like Drafts took a hit, but so did Apple’s own Passwords app—specifically its shared passwords feature.
Affected developers had no fix to offer their users. All they could do was file bug reports and wait for Apple to push an OS-level patch. Notably, the bug only affected iPhone and iPad. macOS Tahoe 26.4 was not impacted.
iOS 26.4.1 also enables Stolen Device Protection by default for enterprise users—something that wasn’t the case in managed device environments before—and fixes a separate Settings app bug where the in-app search would stop indexing, leaving users unable to search within Settings at all.