Overview
- Apple’s Health app now features an Average Bedtime Sleep Highlight that shows a two‑week typical bedtime alongside last night’s time.
- Blood oxygen returns to the Vitals overview on iPhone, joining heart rate, respiratory rate, wrist temperature, and sleep duration in one chart.
- U.S. users still cannot view blood oxygen readings on the Apple Watch display, with results available on iPhone only.
- iOS 26.4 beta 1 is available to developers and public beta testers, with a wider public release planned for spring.
- Apple previously removed on‑device blood oxygen in early 2024 following Masimo’s ITC action and reintroduced readings in August 2025 through an iPhone‑centric workflow.