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Release record

iOS 15.2.1

Full article
Public release
Recorded milestones
1
Beta cycle
—
Average interval
—
Public release
Jan 12, 2022

Release notes

Overview

Editorial synthesis with inline references and a source ledger when citations are available.

Release overview

iOS 15.2.1 was publicly released on January 12, 2022. iOS 15.2.1 was a focused maintenance release for Messages, third-party CarPlay apps, and a disclosed HomeKit denial-of-service issue.[1][2]

Apple documented two user-facing fixes and one CVE-tracked HomeKit correction; this batch does not infer additional changes.[1][2]

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 iOS 15.2.1 and iPadOS 15.2.1

    Apple Support · Apple · 2023-11-03T00:00:00.000Z · iOS 15.2.1 and iPadOS 15.2.1 — Released January 12, 2022

    Back to text ↑
  2. About iOS 15 Updates

    Apple Support · Apple · 2026-05-28T00:00:00.000Z · iOS 15.2.1

    Back to text ↑

Documented & observed

Changes in this version

Source-linked features, fixes, known issues, removals, and community-observed behavior recorded across this version’s appearances and verified builds.

Release changes

Changed in this release

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

bugFix · fixed

Third-party CarPlay input fix

documentedconfirmed

The update restored input responsiveness for affected third-party CarPlay apps.

Recorded at Public

  1. [1] About iOS 15 Updates · iOS 15.2.1

bugFix · fixed

Messages iCloud Link photo fix

documentedconfirmed

The update corrected photo loading for iCloud Links in Messages.

Recorded at Public

  1. [1] About iOS 15 Updates · iOS 15.2.1

Milestones

Release history

Every recorded channel appearance in chronological order. Open an appearance for any available build, scope, notes, and sources.

  1. Public release

    Public

    Full articleEditorially verified

    iOS 15.2.1 reached the public release channel on January 12, 2022. iOS 15.2.1 was a focused maintenance release for Messages, third-party CarPlay apps, and a disclosed HomeKit denial-of-service issue. This article records the public appearance only and does not attribute cumulative notes to an earlier beta.

    Availability
    available
    Sources
    3 linked
    Open this appearance

Historical context

Cycle comparison

Pace, intervals, and duration compared with earlier releases on the same platform.

Historical avg for .2.1 releases

68 days, 6.0 milestones

Based on 1 previous iOS .2.1 releases

Previous .2.1 releases (iOS)

Previous comparable iOS releases
VersionYearCycleMilestonesAvg. Interval
iOS 4.2.1201068d614d

Scroll horizontally to compare every historical field.

Official release notes