Apple Watch Blood Oxygen Feature Returns via iOS 18.6.1 Update

Apple has successfully restored blood oxygen monitoring to affected Apple Watch models in the US following a favorable US Customs ruling. The feature returns through a clever workaround that processes data on paired iPhones instead of the watch itself.

Affected Models & Update Requirements

How the Workaround Functions

The restored blood oxygen feature operates differently than before. Sensor data from the Blood Oxygen app on Apple Watch will be measured and calculated on the paired iPhone, and results can be viewed in the Respiratory section of the Health app.

This approach cleverly circumvents the ITC ban that forced Apple to disable the feature due to patent infringement issues with Masimo. The US Customs ruling enabled this solution.

Background: The Patent Dispute

The International Trade Commission banned blood oxygen monitoring on recent Apple Watch models after finding patent infringement. This affected US users specifically, while international users retained full functionality.

Apple’s response demonstrates how wearable technology companies navigate complex patent landscapes while maintaining user access to health features.

User Experience Changes

New Process:

1. Update iPhone to iOS 18.6.1
2. Update Apple Watch to watchOS 11.6.1
3. Use Blood Oxygen app on watch
4. View results in iPhone’s Health app

Important Notes:

• iPhone required for data processing
• International models remain unchanged
• Original blood oxygen models unaffected

Health Monitoring Implications

This restoration maintains Apple Watch’s position in health tracking devices, ensuring users retain access to vital health metrics despite patent complications.

The workaround, while requiring additional steps, preserves functionality that many users depend on for wellness monitoring.

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