What iOS 27.2 Beta 4 Is
iOS 27.2 Beta 4 is build 24B5110a, released on October 13, 2026. It is a pre-release build available through the developer and public beta channels, and it supersedes every earlier iOS 27.2 beta.
It arrived 8 days after Beta 3 (24B5099f, October 5, 2026), against an average gap of about 9 days across this cycle. That is the normal cadence for this stage of the cycle.
What Changed in iOS 27.2 Beta 4
Apple has not published release notes for this build yet. The build shipped on October 13, 2026; the notes usually follow, sometimes within hours and sometimes not for a few days. Until they do, nobody outside Apple knows what changed in it — and anything you read claiming otherwise is guessing.
We check Apple's release notes every 15 minutes. The moment they appear for Beta 4 specifically, this page fills in with Apple's own account: new features, resolved issues, known issues and deprecations, broken down by the part of the system each one affects. Nothing is written here by us and nothing is inferred from the previous build.
In the meantime, what is verifiable is below: the build number, when it arrived, how long after Beta 3, and every platform's build in the same wave. For the last build we do have notes for, see the build history.
Beta 4 Build Numbers Across Every Platform
Apple ships each beta wave across its platforms on the same day, usually with different build numbers per operating system. Here is every build we recorded in this wave, taken from Apple's own release feed rather than reposted from elsewhere.
Matching build numbers between two platforms — as iOS and iPadOS almost always have — mean they are built from the same source, which is why their betas behave identically.
| Platform | Version | Build | Released |
|---|---|---|---|
| iOS 27 | 27.2 | 24B5110a | October 13, 2026 |
| iPadOS 27 | 27.2 | 24B5110a | October 13, 2026 |
| macOS 27 | 27.2 | 26B5112a | October 13, 2026 |
| visionOS 27 | 27.2 | 24N5114a | October 13, 2026 |
| watchOS 27 | 27.2 | 24S5112a | October 13, 2026 |
How to Install iOS 27.2 Beta 4
There is no profile to download. Enrol your Apple Account free at beta.apple.com for the public beta or developer.apple.com for the developer channel, then open Settings → General → Software Update → Beta Updates and select the iOS 27.2 channel. The build appears in Software Update like any ordinary update.
If you are already on an earlier iOS 27.2 beta, this arrives as a normal update and no re-enrolment is needed. Our full iOS 27.2 install guide covers the process step by step, and our device pages tell you whether your exact model qualifies.
Should You Install It?
That depends on where this build sits in the cycle and what the device is for. Early builds break third-party apps — banking and workplace apps first — and cost you a week of heavy background indexing. Later builds are progressively calmer.
Whatever you decide, make an archived backup on a computer first. A backup made on iOS 27.2 cannot be restored onto the previous release, so it is the only route back with your data intact — our backup guide explains the difference, and our honest assessment covers running a beta on the phone you depend on.
What Comes After Beta 4
Beta 4 is the newest iOS 27.2 build we have on record. Based on this cycle's cadence of roughly 9 days, the next one is due within the next couple of weeks — this page updates automatically when it lands.
Our build history tracks every iOS build with its date and the gap before it, which is the clearest picture of how a cycle is progressing. The beta calendar guide explains the shape of the year.
Frequently Asked Questions
Should I install iOS 27.2 Beta 4?
Not on a device you depend on. Betas break third-party apps — banking and workplace apps first — and cost battery life while the system re-indexes. If you have a spare device, or you accept restoring from scratch, it is reasonable. Back up to a computer first.
Does iOS 27.2 Beta 4 fix battery drain?
Heavy battery use in the first few days after any beta update is normal and comes from background re-indexing, not from a fault. It usually settles within 48 hours. Apple has not published notes for this build, so nobody outside Apple can say what it changed.
What is the build number for iOS 27.2 Beta 4?
iOS 27.2 Beta 4 is build 24B5110a, released on October 13, 2026.
When was iOS 27.2 Beta 4 released?
October 13, 2026, 8 days after Beta 3.
Is there a beta profile for iOS 27.2 Beta 4?
No. Apple removed beta profiles in 2023. Enrol your Apple Account free at beta.apple.com or developer.apple.com and select the channel in Settings — there is no file to download.
How do I check which build I am on?
Settings → General → About, then tap the version number to reveal the build. If it reads 24B5110a you are on iOS 27.2 Beta 4. Our build number guide explains how to read them.