Samsung Galaxy S24 Ultra review: all that and AI


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The Galaxy S24 Ultra is packed with top-tier hardware, but its highly touted AI features are hit-or-miss — and the price is higher than ever.

The Galaxy S24 Ultra is a hell of a phone. As always, Samsung has jammed it full of more high-end hardware than you can shake an S Pen at, and this year it’s also packed with cutting-edge AI features. But it’s expensive, and most of my favorite things about it have very little to do with the AI parts, which aren’t even exclusive to the Ultra.

It comes with a display that’s so easy to use outside in bright light that I want every other manufacturer to copy it. Its camera system is one of the best in the game and comes with a fantastic portrait mode. The built-in stylus remains one of the nicest and fanciest ways to make a grocery list.

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Some of the AI features really are impressive: live translation for phone calls could be really helpful for someone who makes a lot of calls in an unfamiliar language. Voice recording summaries are surprisingly good and give my beloved Pixel Recorder a real run for its money. And turning any video into slow motion is just plain fun. Are the results always great? No, but they’re usually delightful. 

But battery performance is just okay, and while I appreciate the new flat-screen design, it leaves some sharp corners that can be uncomfortable in your hand. Above all, the Ultra is expensive — now starting at $1,299, a $100 increase from last year’s model. Samsung’s everything-but-the-kitchen-sink device is still the most feature-packed phone money can buy, but I’m just not seeing an extra $100 worth of improvements, especially considering that the AI features will all be ported to the S23 series in a future software update. 

Samsung Galaxy S24 Ultra

Samsung Galaxy S24 Ultra

The S Pen abides.

Ever try to use your phone in direct sunlight and find it turns into a mirror? Reflections bounce right off the glass, and whatever you were trying to look at is suddenly invisible. It’s a real pain in the buns, although it’s been less of a problem as OLED screens have gotten brighter over the past few years. The S24 Ultra goes an extra step and introduces a new anti-glare coating that does a fantastic job of cutting those reflections down. 

The 6.8-inch screen peaks at 2,600 nits in bright light, which makes a real difference when you use your phone outside. I prepared myself to squint at the display when I used it in some bright sunshine, so it was a real treat to realize I could see the screen almost as well as I could indoors. There’s a new Gorilla Glass Armor protecting the screen, and it purports to be much more scratch-resistant than previous versions of Gorilla Glass. It’s hard to judge that in just over a week of testing, but so far, so good. 

Samsung followed Apple’s lead on another screen feature: dimming the wallpaper on the always-on display. You can also add a handful of widgets that will continue to display on the AOD even with the phone locked. It’s a straight-up Apple clone, and I have zero problems with that because I crave information and love widgets. Answering “What’s next on my calendar?” is as simple as glancing at my phone screen.

Samsung Galaxy S24 Ultra showing always on display with dimmed wallpaper and widgets.

Samsung Galaxy S24 Ultra showing always on display with dimmed wallpaper and widgets.

Widgets on an always-on display? A beautiful thing.

The always-on display is handy, but it does seem to take a significant toll on battery performance. At the end of each day I tested it, diagnostics reported that it was responsible for about 7 percent of my battery use throughout the day. Overall, battery life on the S24 Ultra isn’t great, but it’s not a disaster by any means — on days of light use, I got to bedtime with around 50 percent in the tank. Heavier days with closer to five hours of screen-on time pushed my review unit’s battery down to 30 percent. Honestly, that’s about average for a flagship phone these days, and I wish performance were a little better across the board. 

In any case, plenty of people will get through a full day on the S24 Ultra just fine, though it’s worth remembering your mileage will dwindle over time as the battery ages. If you’re a power user — as I suspect a lot of people interested in this phone are — you might need an afternoon recharge to avoid late-day battery anxiety.

There’s 45W wired and 15W wireless Qi charging available but no Qi2, which is a real disappointment. If you want to live the MagSafe life with the S24 Ultra, you’ll need to pick up a third-party magnet case — just don’t use the stylus with a magnetic accessory attached — and a MagSafe-compatible (not MagSafe or Qi2) charger.

Samsung Galaxy S24 Ultra on a blue and yellow background at an angle showing flat display.

Samsung Galaxy S24 Ultra on a blue and yellow background at an angle showing flat display.

Curved screens are out; flat screens are in.

The S24 Ultra comes equipped with the Snapdragon 8 Gen 3 chipset no matter where you buy it — not true of the standard S24 and S24 Plus, which come with Exynos chips outside of the US. I can’t find anything wrong with performance on the Ultra. It didn’t get excessively hot in my testing, and with 12GB of RAM, it handled everything I threw at it without a problem.

The S24 Ultra is the first Ultra with a flat screen, and I appreciate it — no longer do I fear running the S Pen over the curved edge. The titanium exterior finish is lovely, but this remains an unapologetically big, heavy phone. After the first few times it slipped out of the pocket of my joggers and onto the wood floor with a thud heard ’round the house, I quit carrying it around with me and left it on the dining room table.

Also, this phone is kind of sharp? The corners where the flat parts of the phone meet the curved edges are pointy, and if you don’t get it situated in your hand just right, they’re pretty uncomfortable. I’m not a case person, but I might consider one with the S24 Ultra for this reason.

Samsung Galaxy S24 Ultra in hand showing homescreen.

Samsung Galaxy S24 Ultra in hand showing homescreen.

That’s a whole lot of phone.

The S24 series ships with One UI 6.1, which is Samsung’s take on Android 14. Like Android 14 itself, One UI 6.1 is a relatively light update, and the things that irritate me about Samsung software persist: a push notification urging me to check out the new Galaxy S24 (lol); lots of proprietary apps and features that I don’t have a use for (I refuse to believe Global Goals has inspired anyone to do anything except uninstall Global Goals); and clickbait links stuffed at the bottom of the weather app (“Tourist Finds Large Diamond at State Park,” really?).

You can de-Samsung a lot of this stuff and live a peaceful existence with One UI, and there’s some good news this year: the company is promising seven years of OS upgrades, including seven years of security updates. That’s a great proposition for ROI and anyone who wants to get the absolute most years out of their phone.

That’s the gist of the regular phone stuff — a massive screen, okay battery life, and performance fitting of a 2024 flagship. So how about the marquee feature: Galaxy AI? Settle in, because there’s a lot to cover. 

Samsung Galaxy S24 Ultra on a blue and yellow background showing rear panel and grey device color.

Samsung Galaxy S24 Ultra on a blue and yellow background showing rear panel and grey device color.

AI and all those cameras.

The short version is this: the S24 Ultra has an impressive collection of AI features. But it’s just that — a collection. It doesn’t feel like a unified set of tools with a collective purpose; it feels like a handful of capabilities scattered throughout the system that are excellent at times and baffling at others.

Take live translation: it happens on-device, and it can act as a real-time interpreter on phone calls. I tried it with my colleague Victoria Song, a fluent speaker of Japanese, and she thought it did an adequate job translating our exchange. It’s best suited for short transactional conversations because it gets impatient with pauses. It doesn’t quite get things right when talking more casually, either — I asked how Vee’s cats were doing, and the translator somehow interpreted her Japanese for “Petey is eating my chair” as “I am eating my chair.” Hilarious, but not ideal!

But if you need to call and ask for some information or make a reservation, it would serve the purpose. And that’s kind of amazing — if you live in a country where you don’t speak the language, I can see this being a hugely useful tool. It’s the kind of situation where AI that’s good enough is better than nothing.

Screenshot of a screen recording text

Screenshot of a screen recording text

The S24 Ultra doesn’t transcribe as you’re recording, but it does generate the transcription fairly quickly and on-device.
Screenshot of transcriptions summary generated with AI.

Screenshot of transcriptions summary generated with AI.

The S24 Ultra’s transcript summaries come with suggested keywords, subheads, and timestamps — pretty good! But it does require a trip to the cloud.

Automatic note and voice transcript summaries are in the same category. I put the S24 Ultra’s new voice recorder features up against my beloved Pixel Recorder by reading them both a passage from the closest book I had on hand, Precious Little Sleep, aka the baby sleep Bible. Overall, I was surprised by how well Samsung kept up with the Pixel. It doesn’t transcribe in real time like the Pixel does, but it’s on-device, and it’s relatively quick after the fact; a six-minute recording took about 90 seconds to transcribe in my testing.

Once you have your transcript, you can generate a detailed summary in just a few seconds, complete with subheads and timestamps. It’s not something I’d trust without double-checking the source material, but like call translation, it gives you a starting point — something useful when you’d otherwise have nothing. Samsung’s translation summaries happen in the cloud, not on-device, so they do require an internet connection. Summarization seems like it’s too much to ask of a phone processor: the Pixel 8 Pro I tested at the same time tried to summarize its recording of the same text, produced one bullet point, and then gave up after chugging for a few minutes.

Then there’s Circle to Search, which is only really an AI feature by association, but spiritually, it feels at home in a discussion about the S24 Ultra’s AI features. It’s a Google feature that’s debuting on the Galaxy S24 and Pixel 8 series and will reportedly come to more high-end Android phones in the future. Basically, it’s Google Lens but everywhere on your phone — any app, anytime. You long-press the home button or navigation handle to engage it, and then a prompt appears to circle the thing you want to know more about. A page of Google results will follow, and you can tap around to learn more or dismiss the whole thing and go about your business. It’s simple, but it kind of feels like how our phones should have been working all along.

Samsung Galaxy S24 Ultra shown in-hand with Google’s Circle to Search results shown on-screen.

Samsung Galaxy S24 Ultra shown in-hand with Google’s Circle to Search results shown on-screen.

Multisearch will prompt you to “add to your search” after an initial query, and that’s where things get interesting.

Google’s improvements to multisearch really make this feature stand out. After you’ve circled something to search for it, you can clarify your search with additional questions using the image as a starting point. Previously, multisearch could only work with basic modifiers, like “blue” to search for a pair of shoes in a particular color. Now, you can ask more complicated questions, and the search results will offer up an answer using generative AI. And that’s where I found the answer I was after most often.

There are some obvious situations where Circle to Search makes immediate sense — a friend texts the name of a restaurant, you highlight the name, and without ever leaving the messages app, you can check where it is. I had to sort of unlearn doing this the long way while using the S24 Ultra, and now that I’m used to Circle to Search, I don’t want to go back to the old way.

But when I was looking for more information about something, the first set of results didn’t always clear things up. Searching for a mural I photographed in San Jose brought up a page of similar-looking murals — helpful if you’re making a Pinterest mood board, less helpful if you want to know exactly what you’re looking at. But asking “Where is this?” in multisearch (shh, I knew where it was, I was just testing the computer) got me to the right answer quickly. 

There are more AI features — naturally there are more — but I won’t go into depth about every one of them. You can have generative AI spice up your text messages with emoji or summarize webpages. They work reasonably well but don’t strike me as being quite as useful as the others. Of course, there’s one more place you’ll find AI at work: the Galaxy S24 Ultra’s camera. 

Samsung Galaxy S24 Ultra in hand showing camera app on screen.

Samsung Galaxy S24 Ultra in hand showing camera app on screen.

The new 5x telephoto is good, but damn the 10x lens was a great party trick.

First, the numbers. Per usual, there are a boatload of cameras on this phone:

  • Main camera: 200-megapixel f/1.7 with OIS
  • 3x telephoto: 10-megapixel f/2.4, OIS
  • 5x telephoto: 50-megapixel f/3.4, OIS
  • Ultrawide: 12-megapixel f/2.2
  • Selfie: 12-megapixel f/2.2

They’re the same cameras that are on the S23 Ultra except for one notable substitution — the 10x lens is gone, swapped for a 5x lens coupled with a bigger, higher-res sensor. This is terrible news for me personally because I love that ridiculous 10x lens. You can take pictures of planes! In the sky! It’s such a great party trick. 

The new version uses crop zoom to get to 10x, and Samsung insists that the image quality is just as good as the 10x optical zoom on the previous version. As far as I can tell, that’s mostly true — detail rendering looks about the same. And the S24 Ultra definitely looks better at 5x since the S23 Ultra was using digital zoom at that focal length. I do see more chromatic aberration on some of the S24 Ultra’s 10x images compared to the S23 Ultra’s, which can make certain subjects appear a little fuzzier — this seems to be less of a problem with distant subjects, like the top of a skyscraper. The switch to a 5x zoom hasn’t been a completely victimless crime. But overall, it’s a move that makes sense. The 5x focal length has a lot more practical uses, and Samsung claims it’s used more often than 10x. Fair. 

Galaxy S24 Ultra (left) and S23 Ultra (right) at 10x zoom, both shown at 100 percent magnification. Chromatic aberration is more noticeable on the S24’s newer 5x camera. Tap the links above for the full images.

Otherwise, there aren’t any drastic changes year over year. Samsung is still leaning on the saturation slider, embracing those vivid reds and blues it’s known for. It usually looks nice and occasionally looks bananas. The company made a few tweaks to the tech behind its portrait mode, which is still excellent. Expert RAW now produces 24-megapixel images with data from 50- and 12-megapixel captures. More data, more better, as they say. 

And I’m thrilled to see Samsung fully embrace Ultra HDR — that’s the high dynamic range image format supported in Android 14. You’ll see the Ultra HDR tone mapping in the live image preview as you take your photo, and the S24 series are the first devices that let you upload Ultra HDR photos to Instagram. These are true HDR photos that look more vibrant than the washed-out “HDR” photos we’re used to seeing, which are really just attempts at showing a wider dynamic range on an SDR display. I’m already impatient for third-party app support to come to more phones.

Samsung is the company that gave us AI Moon, so naturally, there are a few AI photo and video editing features here. Generative AI edits are available behind a star icon in the native gallery editing interface. You can select objects to move around the frame or erase entirely, and you can adjust the horizon using generative fill to pad out the image rather than cropping in. The edits happen off-device, so you need an internet connection and a little patience.

This is very similar to the generative AI editing tools offered on the Pixel 8 Pro, which isn’t surprising — Samsung is using Google’s models to power just about every AI feature on these phones. But I actually find Samsung’s object selection much easier to use than the Pixel’s. On the S24, you just circle an object you want to select, and on-device AI makes the selection. It’s a little uncanny how good it is. Selecting objects on the Pixel feels a little more fiddly.

With an object selected, you can resize it, move it around the frame, or erase it completely. With a somewhat predictable background like grass or a gravel path, generative AI can fill in the blanks convincingly. Predictably, things get dicey with more complicated edits. I selected a lamp on a table and attempted to erase it from a photo; the AI replaced it with a different lamp. 

It’s a similar story with slow-motion AI videos — impressive if you don’t challenge it too much or look too closely. The S24 Ultra can turn any video into a 120fps slow-motion video — essentially using frame interpolation but leaning on generative AI to fill in the gaps. With the right subject and background, it’s totally convincing. But if you start introducing some complexity, it kind of falls apart. 

I slowed down the above 30fps video of my son on a swing, and you can see that the mulch on the playground and greenery in the background gave the AI some trouble. Is it still an adorable video? Yes. Will his grandparents be delighted by it despite its flaws? Also yes. It feels like a feature right on the edge between “good enough” and “too weird” to be fun. 

Samsung Galaxy S24 Ultra showing a blue and yellow homescreen, on a blue and yellow background with green translucent rectangles.

Samsung Galaxy S24 Ultra showing a blue and yellow homescreen, on a blue and yellow background with green translucent rectangles.

The AI puzzle pieces don’t quite make a complete picture.

It’s hard to describe why a device that does so much so well feels like it falls flat. The Galaxy S23 Ultra felt like something truly special — a refinement of a well-balanced formula. But with the S24 Ultra, the math feels a little off.

It’s $100 more expensive, but it’s hard to see an extra $100 worth of value, especially considering the new AI features are shared across the whole S24 series. To be clear, I think it’s a good thing that these features are available on all three phones. But if the Ultra really is the fastest, bestest phone in all the land, shouldn’t it be able to do a little more?

The new anti-glare screen coating is impressive and truly helpful on a bright day. The flat screen is an improvement, and the new titanium exterior looks and feels great. But that’s more or less the extent of this year’s Ultra-only improvements. The AI features, Ultra HDR support, seven years of OS upgrades, updated always-on display — they’re all available on the less pricey S24 and S24 Plus.

That leaves the Ultra with a bigger screen, an S Pen, and a 5x zoom to distinguish it. They’re all great features and sure to please loyal Note / Ultra fans. But the feature-to-price ratio feels just a bit off-balance in a way that it didn’t in the S23 Ultra. 

I wish Samsung had spent a little more time on the less-flashy stuff — improving battery life or making it lighter and more comfortable to use. Heck, I’d be thrilled if Samsung spent time on a little housekeeping on the features that have piled up over the years. Bixby Vision, Google Lens, and Circle to Search all exist on this phone. What are we doing here? 

The Galaxy S24 Ultra remains the absolute most phone. Massive screen, S Pen, all of the cameras, performance out the wazoo — it really has no peer. I just wish that it felt a little more worthy of its price bump when the MSRP was already sky-high before. This is an Ultra phone, alright. I just wish it came with a little extra. 

Photography by Allison Johnson / The Verge

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