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Release record

iOS 3.1.2

Full article
Public release
Recorded milestones
1
Beta cycle
—
Average interval
—
Public release
Oct 8, 2009

Release notes

Overview

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

MacRumors reported the public release of iPhone OS 3.1.2 on October 8, 2009 and preserved three items from the update notice: wake-from-sleep failures, cellular service interruptions that could persist until restart, and occasional crashes during video streaming.[1]

No surviving first-party Apple feature page or dated security-index entry for 3.1.2 was found in the reviewed source set. The local audited date is retained and the three ordinary fixes are labeled as contemporaneous journalism rather than first-party confirmation; no security or undocumented-change claim is inferred.[2][3]

Source ledger

References

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

  1. Apple Releases iPhone OS 3.1.2

    MacRumors · Eric Slivka · 2009-10-08T17:22:00Z · Release date and displayed update notes

    Back to text ↑
  2. Apple security updates (15-Jan-2008 to 03-Dec-2009)

    Apple Support · Apple · 2026-07-30 · Archived 2009 index; no iOS 3.1.2 entry

    Used only to bound what Apple's retained security index does not document.

    Back to text ↑
  3. Apple Releases iPhone OS 3.1.2

    MacRumors · Eric Slivka · 2009-10-08T17:22:00Z · October 8, 2009 report and update-note transcription

    Back to text ↑
  4. Apple Releases iPhone OS 3.1.2

    MacRumors · Eric Slivka · 2009-10-08T17:22:00Z · October 8, 2009 release and update notes

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

Video-streaming crash

documentedreported

The third listed maintenance item addressed a crash that could occur while video was streaming.

Recorded at Public

  1. [1] Apple Releases iPhone OS 3.1.2 · Displayed update notes — video streaming

bugFix · fixed

Wake-from-sleep reliability

documentedreported

A contemporaneous report preserving the update notice says 3.1.2 corrected an intermittent case where an iPhone would not wake.

Recorded at Public

  1. [1] Apple Releases iPhone OS 3.1.2 · Displayed update notes — wake from sleep

bugFix · fixed

Cellular service continuity

documentedreported

The preserved update notice describes an intermittent loss of cellular service that could persist until the device restarted.

Recorded at Public

  1. [1] Apple Releases iPhone OS 3.1.2 · Displayed update notes — cellular network services

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

    The public iPhone OS 3.1.2 update addressed wake-from-sleep reliability, cellular service interruption, and crashes during video streaming according to a contemporaneous preservation of the displayed update notes.

    Availability
    available
    Sources
    8 linked
    Open this appearance

Historical context

Cycle comparison

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

Historical avg for .1.2 releases

7 days, 2.0 milestones

Based on 1 previous iOS .1.2 releases

Previous .1.2 releases (iOS)

Previous comparable iOS releases
VersionYearCycleMilestonesAvg. Interval
iOS 12.1.220187d27d

Scroll horizontally to compare every historical field.