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Release appearance

watchOS 5.1.2 Public

Full article
Public release

Recorded context

About this appearance

watchOS 5.1.2 reached the public channel on December 6, 2018 with regulated heart features, pass access, competition feedback, new complications, Walkie-Talkie controls, and security repairs.

Date
Dec 6, 2018
Availability
available
Revision
No

Release notes

What changed

Original editorial synthesis. Linked references appear with the claims they support and in the source ledger.

Public release

Apple released watchOS 5.1.2 on December 6, 2018. The update activated ECG and irregular-rhythm capabilities for supported hardware and regions and added several everyday interface refinements.[1][2][3]

Documented scope

Health claims are limited to Apple's described recording, classification, storage, sharing, and notification behavior. The page does not infer clinical outcomes and keeps hardware and regional restrictions visible.[4][5][3]

Source ledger

References

Sources are linked to the claims they support. Publication and access dates are shown when available.

  1. About the security content of watchOS 5.1.2

    Apple Support · Apple · 2018-12-06T00:00:00.000Z · Released December 6, 2018

    Back to text ↑
  2. ECG app and irregular heart rhythm notification available today on Apple Watch

    Apple Newsroom · Apple · 2018-12-06T00:00:00.000Z · Update December 6, 2018

    Back to text ↑
  3. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.1.2

    Back to text ↑
  4. ECG app and irregular heart rhythm notification available today on Apple Watch

    Apple Newsroom · Apple · 2018-12-06T00:00:00.000Z · ECG app; irregular heart rhythm notification

    Back to text ↑
  5. About the security content of watchOS 5.1.2

    Apple Support · Apple · 2018-12-06T00:00:00.000Z · watchOS 5.1.2 security content

    Back to text ↑
  6. About the security content of watchOS 5.1.2

    Apple Support · Apple · 2018-12-06T00:00:00.000Z · Airport; Disk Images; Kernel; LinkPresentation; Profiles; WebKit

  7. ECG app and irregular heart rhythm notification available today on Apple Watch

    Apple Newsroom · Apple · 2018-12-06T00:00:00.000Z · December 6, 2018

  8. ECG app and irregular heart rhythm notification available today on Apple Watch

    Apple Newsroom · Apple · 2018-12-06T00:00:00.000Z · ECG App

  9. ECG app and irregular heart rhythm notification available today on Apple Watch

    Apple Newsroom · Apple · 2018-12-06T00:00:00.000Z · Irregular Heart Rhythm Notification

  10. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.1.2 — Activity competition

  11. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.1.2 — ECG app

  12. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.1.2 — Infograph complications

  13. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.1.2 — irregular heart rhythm alert

  14. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.1.2 — Walkie-Talkie

  15. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.1.2 — Wallet

Release changes

Changed in this release

Features, fixes, removals, and regressions first observed in this release record.

enhancement · changed

Contactless Wallet pass access

documentedconfirmed

The update shortened access to eligible Wallet passes during a contactless interaction.

  1. [1] About watchOS 5 Updates · watchOS 5.1.2 — Wallet

enhancement · changed

Additional Infograph complications

documentedconfirmed

Apple expanded the data and shortcuts that Series 4 Infograph layouts could place on the face.

  1. [1] About watchOS 5 Updates · watchOS 5.1.2 — Infograph complications

enhancement · changed

Activity competition maximum-point feedback

documentedconfirmed

The update made a top-scoring competition day more visible with immediate feedback and celebration.

  1. [1] About watchOS 5 Updates · watchOS 5.1.2 — Activity competition

security · fixed

watchOS 5.1.2 security repairs

documentedconfirmed

Apple's advisory documents privilege, code-execution, information-disclosure, denial-of-service, spoofing, certificate-validation, and web-processing fixes.

  1. [1] About the security content of watchOS 5.1.2 · Airport; Disk Images; Kernel; LinkPresentation; Profiles; WebKit

enhancement · changed

Walkie-Talkie availability in Control Center

documentedconfirmed

The release exposed the service's availability state in a faster system-level control.

  1. [1] About watchOS 5 Updates · watchOS 5.1.2 — Walkie-Talkie