Does the iPhone 13 Pro Max Support iOS 27?
Yes — the iPhone 13 Pro Max is on Apple's iOS 27 compatibility list, so it can run the iOS 27 beta. It shipped with iOS 15, which means iOS 27 is another major version running on the same A15 Bionic hardware. This model is near the end of its upgrade road — possibly one more major version beyond iOS 27, and quite possibly not.
Being on the list and getting every feature are two different things, though. iOS 27 runs without Apple Intelligence. Expect the general feature set to work, with occasional early-beta stutter that clears in later builds.
How to Install the iOS 27 Beta on the iPhone 13 Pro Max
There is no beta profile to download — Apple removed configuration profiles from the process in 2023. Enrol your Apple Account free at beta.apple.com (public beta) or developer.apple.com (developer beta), then open Settings → General → Software Update → Beta Updates on your iPhone 13 Pro Max, sign in with the same Apple Account and select iOS 27 Public Beta or iOS 27 Developer Beta.
The beta then appears in Software Update like any ordinary update. Download it over Wi-Fi with the device on a charger, and let the first-boot indexing pass finish before judging how it runs. Our full iOS 27 install guide walks through every step with screenshots.
iPhone 13 Pro Max Specifications That Matter for the Beta
The iPhone 13 Pro Max launched in 2021 with the A15 Bionic, 6 GB of memory, a 6.7-inch Super Retina XDR OLED with ProMotion display and storage options of 128 GB, 256 GB, 512 GB, 1 TB. Three of those numbers decide how a beta behaves on it: the chip sets raw speed, the memory decides how many apps survive in the background, and the free space determines whether the installer will even start.
The first ProMotion iPhone, and still the longest-lasting iPhone battery Apple has shipped relative to its class. iOS 27 asks more of it than iOS 15 did, and early betas make that obvious.
What the iPhone 13 Pro Max Gets in iOS 27 — and What It Doesn't
Apple Intelligence does not run on the iPhone 13 Pro Max. Apple gates it on newer silicon — A17 Pro and later on iPhone — so those sections simply never appear, no matter which beta build you install. This is a hardware boundary, not a bug, and no future iOS 27 update will change it.
Everything else in iOS 27 — the interface changes, the new Settings layout, Control Centre, Messages, Photos, Safari and the system apps — installs and works on the iPhone 13 Pro Max exactly as it does on current hardware. Feature-by-feature availability across every model is on our supported devices page.
Performance and Battery on the iPhone 13 Pro Max
Five years of cycles means many of these phones have been through a battery replacement. An original battery below 80% health will make an iOS 27 beta feel far worse than the software actually is. On the thermal side, handles beta workloads well thanks to its size; heat is rarely the complaint on this model.
The pattern is consistent across every device: the first two to three days after a beta install look far worse than the software actually is, because Spotlight is reindexing, Photos is re-analysing your library and iCloud is re-syncing all at once. If it has not settled after four days, our battery drain fix guide covers the settings that actually help.
Before You Install a Beta on Your iPhone 13 Pro Max
Make an archived backup first — on an iPhone or iPad that means an encrypted Finder backup to a computer, not just iCloud. An iCloud backup made on iOS 27 cannot be restored onto iOS 26, so it is not a route back. Our backup guide explains the difference in detail.
Check free space too. A iOS 27 beta wants roughly 15 GB free before it will begin, which is more than the download size suggests. If you depend on this iPhone for work, consider whether the public beta channel suits you better than the developer channel.
How to Get Back to iOS 26 on the iPhone 13 Pro Max
Turn off Beta Updates first, then put the iPhone 13 Pro Max into recovery mode and restore the signed iOS 26 IPSW through Finder. That erases the device, which is why the archived backup matters — our downgrade guide covers the whole sequence, and the IPSW page explains which files are still signed.
If you simply want to stop receiving new betas without erasing anything, set Beta Updates to Off and stay where you are until the finished iOS 27 release arrives and overtakes your build. Our guide to leaving the beta program covers both routes.
Frequently Asked Questions
Can the iPhone 13 Pro Max run iOS 27?
Yes. The iPhone 13 Pro Max is on Apple's iOS 27 compatibility list and can install both the developer and public beta through Settings → General → Software Update → Beta Updates.
Does the iPhone 13 Pro Max support Apple Intelligence in iOS 27?
No. Apple Intelligence requires newer silicon than the A15 Bionic in the iPhone 13 Pro Max, so those features never appear — on any iOS 27 build, now or later.
Is there a iOS 27 beta profile for the iPhone 13 Pro Max?
No. Apple removed beta profiles in 2023. Beta access is now tied to your Apple Account: enrol free at beta.apple.com, then choose the channel in Settings → General → Software Update → Beta Updates.
How much free space does the iOS 27 beta need on the iPhone 13 Pro Max?
Around 15 GB free, which is considerably more than the download size. The iPhone 13 Pro Max ships in 128 GB, 256 GB, 512 GB, 1 TB configurations, so check the smallest one carefully before you start.
Will the beta hurt battery life on the iPhone 13 Pro Max?
Temporarily, yes. Five years of cycles means many of these phones have been through a battery replacement. An original battery below 80% health will make an iOS 27 beta feel far worse than the software actually is.