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Release record

iOS 13.3.1

Full article
Public release
Recorded milestones
1
Beta cycle
—
Average interval
—
Public release
Jan 28, 2020

Release notes

Overview

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

Release overview

iOS 13.3.1 was publicly released on January 28, 2020. iOS 13.3.1 corrected Communication Limits, Mail, FaceTime, notifications, CarPlay, and other reliability issues while adding a U1 location-services control.[1][2]

The patch mixed privacy and parental-control corrections with communications, camera, Wi-Fi notification, and in-car audio fixes.[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 13.3.1 and iPadOS 13.3.1

    Apple Support · Apple · 2023-11-03T00:00:00.000Z · iOS 13.3.1 and iPadOS 13.3.1 — Released January 28, 2020

    Back to text ↑
  2. About iOS 13 Updates

    Apple Support · Apple · 2024-02-26T00:00:00.000Z · iOS 13.3.1

    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

Wi-Fi notification and CarPlay audio fixes

documentedconfirmed

The update corrected the documented notification-delivery and in-car call-audio problems.

Recorded at Public

  1. [1] About iOS 13 Updates · iOS 13.3.1

bugFix · fixed

Mail, FaceTime, and Deep Fusion fixes

documentedconfirmed

The patch corrected the documented Mail, calling, and photo-editing issues.

Recorded at Public

  1. [1] About iOS 13 Updates · iOS 13.3.1

bugFix · fixed

Communication Limits and U1 controls

documentedconfirmed

The update tightened Communication Limits and exposed a new U1 location-services control.

Recorded at Public

  1. [1] About iOS 13 Updates · iOS 13.3.1

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 13.3.1 reached the public release channel on January 28, 2020. iOS 13.3.1 corrected Communication Limits, Mail, FaceTime, notifications, CarPlay, and other reliability issues while adding a U1 location-services control. This article records that public appearance only and does not assign 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.

Official release notes