Apple released iOS 27 on September 14, bringing a major visual refresh, performance improvements, new features across built-in apps, Apple Intelligence and Siri AI, expanded child-safety tools, and plenty of smaller changes.
But there is one important detail about this particular iOS 27 experience: I installed it on an iPhone SE (3rd generation).
Not an iPhone 18 Pro. Not an iPhone 17 Pro Max. Not even a current-generation standard iPhone.
The little 4.7-inch iPhone with a Home button and Touch ID is my test device—and after spending quite a bit of time poking around iOS 27, I discovered that Apple’s latest software update is simultaneously more substantial and more subtle on the SE 3 than I expected.
Some changes are immediately visible. Others are hidden in menus, authentication behavior, system animations, and individual apps. And then there are the features that simply aren’t coming to this phone.
So, here’s what iOS 27 actually feels like on the iPhone SE 3.
First, yes: the iPhone SE 3 officially gets iOS 27
The iPhone SE (3rd generation) is officially supported by iOS 27, alongside the iPhone SE (2nd generation) and iPhone 11 and newer models. Apple also notes that features and apps can vary depending on the iPhone model, region, language, and carrier.
That distinction matters.
Getting iOS 27 doesn’t mean getting every feature Apple showed off for the newest iPhones.
And that’s probably the biggest theme of my SE 3 experience so far.
The first thing I noticed: iOS 27 feels surprisingly fast
One of the most interesting things about iOS 27 isn’t a feature at all.
It’s the feeling of using the phone.
The SE 3 feels surprisingly responsive on iOS 27. App launches, Home Screen navigation, Control Center interactions, and general system movement feel quick and fluid. Even some of the new interface effects don’t give me the impression that Apple simply piled another layer of visual effects onto older hardware and called it a day.
Apple itself says iOS 27 brings performance improvements across iPhone and iPad, including app launches that can be up to 30 percent faster, although Apple’s testing was conducted on specific devices and conditions rather than the SE 3.
That makes my experience particularly interesting because the SE 3 is hardly the device you’d expect to showcase a major performance story in 2026.
Before iOS 27 arrived, I had already written about reports that Apple was approaching the release with a performance and optimization focus reminiscent of Mac OS X Snow Leopard.
After actually installing it, the performance emphasis is one of the things I notice most.
Liquid Glass gets a “More Clear” treatment
Liquid Glass is obviously the star of iOS 27’s visual redesign.
But Apple did something I particularly appreciated: it gives users more control over how transparent or tinted the material looks.
The new Settings slider can move the interface from an ultraclear appearance toward a fully tinted treatment. Apple describes it as a way to personalize Liquid Glass.
I immediately dragged mine toward the transparent end.
Apple calls that “More Clear.”
And yes, I have already mentally renamed it:
“Make the whole thing clear.”
The more transparent setting makes the interface feel considerably less heavy, particularly when glass surfaces are appearing over colorful content.
And that leads to one of the strangest things I discovered.
I found a Liquid Glass “black hole”
Some Liquid Glass surfaces don’t merely look transparent.
They dramatically blur and distort whatever is underneath them.
When colorful app icons sit behind a translucent system surface, the colors bleed through the material in a way that makes the interface look almost like it’s pulling the background into itself.
I jokingly started calling it the Liquid Glass black hole.
It’s one of those things that makes much more sense when you see it moving than when somebody describes it in a feature list.
This is also why I think some of the smaller iOS 27 changes are more fun to discover personally than simply reading Apple’s announcement.
The app icons look darker, too
Another subtle change I noticed is that the app icons look more subdued or darker in some parts of the interface.
Apple says the updated icons are sharper and more defined as part of its Liquid Glass refinements.
But on the SE 3, the visual effect can feel more like the icons have been toned down.
I suspect the change helps the icons sit more comfortably alongside the new translucent interface, although that’s my interpretation rather than an explanation Apple has explicitly given.
Either way, it’s one of those changes you notice only after spending some time with the new system.
The battery icon is… huge
And then there is the battery indicator.
Apple, what happened here?
The redesigned battery indicator is noticeably larger on the SE 3’s status bar. On a phone with a 4.7-inch display, that extra visual weight is particularly obvious.
Most of the status-bar elements remain tiny and restrained, while the battery indicator seems to have decided it deserves a little more attention.
It’s not necessarily a functional problem.
It’s just… large.
This may be one of the most unnecessary discoveries in my entire iOS 27 testing.
The shutdown screen got a Liquid Glass makeover
I also discovered a redesigned shutdown interface.
The familiar “slide to power off” control now has a more dimensional, glassy appearance, while the Cancel control at the bottom is presented as a large circular button.
It’s another example of a change that isn’t likely to appear in Apple’s headline feature list, because you only see it when you actually try to turn the iPhone off.
And yes, I had to turn the phone off just to investigate it.
That’s journalism.
Touch ID App Lock is much stricter
This is one of my favorite iOS 27 changes on the SE 3, and it’s not cosmetic.
iOS now lets users lock individual apps, and on my SE 3, the behavior is extremely strict.
After I authenticate a locked app with Touch ID, I can use it normally. But as soon as I leave it, returning to that app requires Touch ID again.
I tested the same app repeatedly.
Open it.
Authenticate.
Leave it.
Open it again.
Authenticate.
Leave it.
Open it again.
Authenticate again.
It consistently behaved this way.
I also tested different situations. Switching to another app and returning requires authentication. Going through multiple apps and returning requires authentication. Leaving the app for the Home Screen and coming back requires authentication. Even locking the iPhone and returning to the protected app requires authentication again.
There is one interesting exception in my testing: Control Center doesn’t trigger another authentication prompt when I pull it down and return to the protected app.
Notification Center is different. Pulling down Notification Center and returning to the protected app caused the app to require authentication again.
So iOS 27’s behavior isn’t simply “anything that covers the app causes a lock.” It appears to distinguish between different system interactions.
For me, this is exactly the kind of App Lock behavior I’ve wanted since Apple introduced the feature.
If I lock an app, I want it to actually lock.
Photos gets a wonderfully simple feature
Here’s another one that made me laugh because computers have been doing it forever.
In Photos, iOS 27 lets you Save Video Frame as Photo.
You can pause a video on the frame you want and save that frame as an actual photo.
Apple officially lists the ability to save any video frame as a photo among the iOS 27 Photos features.
On a computer, you can right-click a video in a browser and find something like “Save video frame as…”
Now the iPhone can do essentially the same thing directly inside Photos.
No more:
Pause video → screenshot → crop screenshot → remove controls → save.
It’s a small feature, but it’s exactly the sort of small feature that makes using the phone easier.
Apple Music got a nice surprise on the SE 3
I had previously heard that Apple Music would get a landscape interface where artwork and playback controls occupy one side while the playlist appears on the other.
I wasn’t sure how that would translate to a 4.7-inch iPhone SE 3.
The answer: Apple Music still looks surprisingly good.
The landscape Now Playing interface gives the artwork plenty of space while keeping playback controls and the queue accessible. The tinted artwork background also blends nicely into the interface.
It’s not the giant-screen experience you might see on a modern Pro Max, but Apple has managed to make it feel useful on the SE 3.
This is one of those moments where I genuinely thought:
“Okay, Apple. You got this one right.”
Safari and Apple Music have a different kind of navigation-bar behavior
I’ve been paying particular attention to iOS 27’s new floating navigation bars.
Instagram, for example, uses a behavior where its bottom navigation can shrink as you scroll.
Apple’s own apps are much more inconsistent.
But there are some interesting exceptions.
Safari’s bottom address bar can recede as you scroll, producing a shrink-like effect. Apple Music and Podcasts also have interfaces that don’t necessarily perform exactly the same physical shrinking animation as Instagram, but visually behave as though the navigation UI is giving the content more breathing room.
That’s important because it means Apple clearly has multiple approaches to reducing the prominence of bottom navigation during content consumption.
And then there are Apple’s “Content Scanner” apps
This is where my SE 3 testing got funny.
The App Store, Apple Store, Apple TV, Health, Fitness, Apple Watch, Games, Apple Support, Books, Find My, Shazam, and Developer apps have all shown me versions of the new floating Liquid Glass navigation treatment that stay expanded while scrolling.
On a large edge-to-edge iPhone, this might not bother you much.
On a 4.7-inch SE 3?
The navigation bar starts to feel like it’s becoming part of the content.
I jokingly call it the Liquid Glass Content Scanner.
You’re scrolling through the App Store, and the big translucent navigation pill sits over the bottom portion of the screen, showing you a blurred preview of whatever happens to be underneath it.
Instagram demonstrates that navigation can get out of the way.
Safari demonstrates a similar idea.
Apple Music and Podcasts have their own version of the effect.
So, on the SE 3, I’d much rather see the navigation UI recede while I’m actually consuming content.
Justice for small-screen iPhones.
Apple Music and Podcasts aren’t completely in the same category
I don’t want to oversimplify this as “Apple forgot to make its apps shrink.”
My testing doesn’t support that conclusion.
Apple’s own apps appear to be using different navigation behaviors.
Some keep the large floating bar.
Some create a shrink-like effect.
Safari reduces the prominence of its address bar.
Instagram uses a more obvious collapsing behavior.
So the more interesting question isn’t necessarily whether Apple forgot.
It’s why Apple’s own apps aren’t using one consistent navigation strategy.
And the difference is much easier to notice on the SE 3 because every bit of screen space matters.
GymKit comes to iPhone
Another feature I noticed is GymKit support on iPhone.
Apple says GymKit now allows iPhone to connect with compatible cardio equipment, including treadmills, ellipticals, bikes, and stair-steppers, for real-time workout metrics.
That’s a much more substantial feature than some of the tiny visual changes I’ve been cataloging.
It also illustrates something important about iOS 27: not every major feature is restricted to Apple’s newest phones.
Health gets new cycle-tracking capabilities
Apple has also added perimenopause and menopause support to Cycle Tracking, including notifications when logged patterns are suggestive of perimenopause.
That’s another example of a meaningful built-in-app update that doesn’t depend on the SE 3 having the newest processor or camera system.
The big thing the SE 3 doesn’t get: Apple Intelligence
Now for the elephant in the room.
The iPhone SE 3 doesn’t get Apple’s new Apple Intelligence features or Siri AI.
Apple’s current requirements put Apple Intelligence on the iPhone 16 lineup and newer models, as well as the iPhone 15 Pro and iPhone 15 Pro Max. The SE 3 isn’t included.
That means features such as Siri AI, Genmoji, Image Playground, Apple Intelligence-powered Photos tools, and other AI capabilities aren’t part of my SE 3 experience.
Apple’s new Siri AI is a substantially different Siri experience, with personal context understanding, onscreen awareness, systemwide app actions, and broader knowledge.
I’ve already covered that separately here:
Related /
So I won’t spend half this article pretending my SE 3 has features that it doesn’t.
It doesn’t.
And that’s precisely why this article exists.
The new child-safety features aren’t the SE 3’s headline story either
iOS 27 also introduces a redesigned Screen Time experience and new child-safety features, including Ask to Browse, expanded Communication Safety protections, new child-account setup options, and more granular controls over apps and communication.
I’ve already covered those changes separately:
Related /
They’re part of iOS 27, but they’re not something I need to duplicate in detail here.
There are plenty of other changes hiding in iOS 27
Apple’s official iOS 27 documentation lists several other additions, including extra-large Home Screen widgets, improvements to iCloud Shared Albums, new Health features, enhanced Maps Flyover, AirPods Custom EQ, Camera changes, Safari improvements, accessibility updates, and more.
Some are available on the SE 3, while others depend on newer hardware or Apple Intelligence support.
That’s the key distinction that gets lost when you simply read a giant “What’s New in iOS 27” list.
Your iPhone can support the operating system without supporting every individual feature.
And that’s why Apple should add a feature-compatibility card
After seeing how dramatically the iOS 27 experience differs between iPhone generations, I have one suggestion for Apple.
Put a feature compatibility card directly on the Software Update screen.
Imagine opening the iOS 27 update page and seeing two collapsible sections underneath the main update information:
Supported on your iPhone
✓ Feature A
✓ Feature B
✓ Feature C
✓ Feature D
Not supported on your iPhone
× Feature X
× Feature Y
× Feature Z
And don’t make it disappear after the update.
Keep the card throughout the major iOS release. When iOS 27.1 arrives, update the same feature list. When iOS 27.4 arrives, update it again.
That would save users from having to install the update and then immediately start Googling:
“Does iPhone SE 3 support this?”
Apple already knows the model.
Apple already knows the installed software version.
Apple already knows which features are supported.
So why make users become detectives?
I wouldn’t even need to open Google.
I could simply look at the update page.
And yes, if someone wants the entire list open while exploring the new OS, take a screenshot, weirdos.
The SE 3 experience is smaller—but more interesting than I expected
After all this testing, I wouldn’t describe iOS 27 on the iPhone SE 3 as a massive collection of headline features.
It’s more subtle than that.
The biggest changes I personally notice are the Liquid Glass redesign, the More Clear control, the improved responsiveness, the stricter App Lock behavior, the redesigned system interfaces, the Apple Music experience, the Photos video-frame feature, and a whole collection of tiny UI changes that Apple doesn’t necessarily advertise as major features.
And then there are the missing features.
Apple Intelligence is the obvious one.
That’s the trade-off of running Apple’s newest operating system on a phone from a different era.
But there’s something I genuinely like about that.
The SE 3 was the last iPhone of its kind. It’s a classic iPhone design with a 4.7-inch display, a physical Home button, and Touch ID. I didn’t buy it simply because it had Touch ID. I bought it because I wanted a classic iPhone, and because it was the last one Apple made in that form.
I even considered buying a refurbished original iPhone SE.
The SE 3 ultimately made more sense because of its newer hardware and longer software life.
And now I’m sitting here in 2026, running iOS 27 on the last classic iPhone, investigating Liquid Glass, testing Touch ID security behavior, checking whether Apple apps know how to shrink their navigation bars, and wondering why the battery icon suddenly got so enormous.
That’s a pretty fun way to experience iOS 27.
The headline iOS 27 story might be Siri AI and Apple Intelligence on Apple’s newest hardware.
But for me, the more interesting story is what happens when you put iOS 27 on the iPhone SE 3.
Some features arrive.
Some don’t.
Some are obvious.
Some are hilariously unnecessary.
And some you have to discover yourself.
That’s iOS 27 on my iPhone SE 3.
And I’m still finding things.
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