iOS 18.6.1 update available

A late update brings back blood oxygen monitoring for Apple Watch users and hints at a follow up release, prompting mixed reactions.

Apple iOS 18.6.1 Update Restores Blood Oxygen on Apple Watch

Apple released iOS 18.6.1 this week, compatible with iPhones from 2018 onward. The update restores the blood oxygen monitoring feature on Apple Watch Series 7 and later by moving the calculation from the watch to the iPhone, with results shown in the Health app. A companion watchOS 11.6.1 update is also required for full functionality.

The update notes say there are no new security features, and early reports describe a mix of performance improvements and occasional issues. Some users report faster speed, while others note app crashes. Reports of an iOS 18.6.2 update arriving soon have circulated, though no firm release date is set. Apple also notes that iOS 26 will support most devices except the oldest iPhone XS, XS Max, and XR, with general release expected around mid September.

The move shows Apple juggling a legal dispute with Masimo while trying to keep health features available. By shifting data processing to the iPhone, Apple reduces risk on devices but adds potential delays in syncing health data between watch and phone.

This pattern reflects a broader push to fix post launch issues quickly while protecting health data functionality. The next update will test user patience on timing and reliability as Apple navigates legal constraints and user expectations for a seamless wearables experience.

Highlights

The next moves will reveal if the patch can evolve into a smoother health experience for wearables.