Apple just outsmarted federal regulators and patent lawyers by bringing back blood oxygen monitoring to U.S. Apple Watches through a clever software workaround that shifts data processing to your iPhone.
Story Highlights
- Blood oxygen monitoring returns to Apple Watch Series 9, 10, and Ultra 2 via software update after 18-month absence
- Feature was removed due to patent dispute and federal import ban, costing users a key health tool
- Apple’s workaround processes sensor data on iPhone instead of watch to comply with U.S. Customs ruling
- Update available immediately through iOS 18.6.1 and watchOS 11.6.1 for eligible U.S. users
Apple Outmaneuvers Patent Dispute Through Technical Innovation
Apple announced August 14, 2025, the restoration of blood oxygen monitoring to select U.S. Apple Watch models through a redesigned software implementation. The feature returns to Apple Watch Series 9, Series 10, and Apple Watch Ultra 2 via updates to iOS 18.6.1 and watchOS 11.6.1. This marks the end of an 18-month period where new U.S. Apple Watches lacked this health monitoring capability due to legal restrictions stemming from a patent dispute.
Federal Import Ban Stripped Health Feature From American Consumers
The blood oxygen monitoring feature disappeared from new U.S. Apple Watches in late 2023 following a U.S. International Trade Commission ruling and subsequent import ban. Apple removed the functionality from new American models to comply with federal trade restrictions related to patent infringement claims. This regulatory interference left U.S. consumers with diminished health monitoring capabilities compared to international users, who retained full access to the feature throughout the dispute.
Software Architecture Bypasses Regulatory Constraints
Apple’s solution shifts blood oxygen calculation from the watch hardware to the paired iPhone, enabling compliance with U.S. Customs requirements while restoring user functionality. The Apple Watch sensors still collect the raw data, but processing occurs on the iPhone with results displayed in the Health app. This technical workaround demonstrates how American innovation can navigate bureaucratic obstacles while maintaining consumer benefits and constitutional principles of free market competition.
Apple to bring blood oxygen feature to some US watches with software update https://t.co/dzRWsH5FGa https://t.co/dzRWsH5FGa
— Reuters (@Reuters) August 14, 2025
Users can access the restored feature immediately by updating both their iPhone and Apple Watch software to the latest versions. The implementation requires a paired iPhone to function, unlike the previous standalone watch-based processing. This represents a victory for consumer choice and health freedom over regulatory overreach that unnecessarily restricted American access to beneficial technology.
Sources:
Blood Oxygen Feature Finally Returning to Apple Watch in the U.S.
An update on Blood Oxygen for Apple Watch in the U.S.
Apple’s redesigned blood oxygen monitoring feature hits Apple Watches in the US today
Apple Watch getting blood oxygen sensor back after 18-month absence
