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Release appearance

watchOS 5.2 Public

Full article
Public release

Recorded context

About this appearance

watchOS 5.2 reached the public channel on 2019-03-27. This article records Apple's version-labeled feature or maintenance notes and the accompanying first-party security record.

Date
Mar 27, 2019
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

watchOS 5.2 was released on March 27, 2019 with ECG and irregular-rhythm notification expansion in Hong Kong and parts of Europe, second-generation AirPods support, real-time text calling, and security repairs.[1][2]

What the evidence supports

Health-feature availability remained region- and device-dependent. This record names the regions exactly at the level Apple documented and does not treat later market expansions as part of 5.2.[3][4]

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 5.2

    Apple Support · Apple · 2019-03-27T00:00:00.000Z · Released March 27, 2019

    Back to text ↑
  2. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.2

    Back to text ↑
  3. About the security content of watchOS 5.2

    Apple Support · Apple · 2019-03-27T00:00:00.000Z · watchOS 5.2 security content

    Back to text ↑
  4. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.2; regional availability note

    Back to text ↑
  5. About the security content of watchOS 5.2

    Apple Support · Apple · 2019-03-27T00:00:00.000Z · Contacts; Kernel; Messages; Passcode; Privacy; Sandbox; Siri; TrueTypeScaler; WebKit

  6. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.2 — AirPods (2nd generation)

  7. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.2 — ECG app availability

  8. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.2 — Irregular heart rhythm notifications

  9. About watchOS 5 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 5.2 — real-time text (RTT)

Release changes

Changed in this release

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

security · fixed

watchOS 5.2 security repairs

documentedconfirmed

The release repaired vulnerabilities across contacts and messages, privacy and passcode handling, privilege boundaries, the kernel, fonts, Siri, and WebKit.

  1. [1] About the security content of watchOS 5.2 · Contacts; Kernel; Messages; Passcode; Privacy; Sandbox; Siri; TrueTypeScaler; WebKit

feature · introduced

Real-time text for phone calls

documentedconfirmed

The update enabled real-time text during compatible phone calls, adding a live typed communication option on Apple Watch.

  1. [1] About watchOS 5 Updates · watchOS 5.2 — real-time text (RTT)

compatibility · introduced

Irregular-rhythm notifications expand regionally

documentedconfirmed

The release extended irregular-rhythm notifications to Hong Kong and supported parts of Europe, subject to Apple's regional availability.

  1. [1] About watchOS 5 Updates · watchOS 5.2 — Irregular heart rhythm notifications

compatibility · introduced

Second-generation AirPods support

documentedconfirmed

watchOS 5.2 added system support for pairing and using Apple's second-generation AirPods with Apple Watch.

  1. [1] About watchOS 5 Updates · watchOS 5.2 — AirPods (2nd generation)

compatibility · introduced

ECG expands to Hong Kong and parts of Europe

documentedconfirmed

watchOS 5.2 expanded the regulated ECG feature beyond its earlier markets to Hong Kong and a set of supported European regions.

  1. [1] About watchOS 5 Updates · watchOS 5.2 — ECG app availability