Technologies
Looking to Upgrade? Galaxy S24 Ultra Specs vs. S23 Ultra vs. iPhone 15 Pro Max
Samsung’s premium Galaxy S24 Ultra phone has arrived. Here’s how it stacks up against last year’s S23 Ultra and Apple’s flagship iPhone 15 Pro Max.

Samsung unveiled the brand new Galaxy S24 Ultra at its Unpacked event. If you’re a Galaxy owner thinking of upgrading, you may wonder how this new flagship phone compares to last year’s Galaxy S23 Ultra (especially since you can find the S23 Ultra for less now that the S24 Ultra is available). Or, if you’re trying to decide between Samsung and Apple, you may be curious how the top-of-the-line S24 Ultra compares to the premium iPhone 15 Pro Max. Let’s break down the specs so you can get a better idea of which phone is right for you.
Last year’s S23 Ultra had a starting price of $1,200 after its release in the US and now starts at $875, while the new S24 Ultra starts at $1,300. The iPhone 15 Pro Max, on the other hand, starts at $1,200. So the base S24 Ultra is $100 more than the base 15 Pro Max, and $100 more than its predecessor was upon its release. (See the chart below for UK and Australian pricing.)
Read more: Best Galaxy S24 Preorder Deals: Take $1,000 Off Samsung’s New Flagship With Early Savings
The S24 Ultra has Qualcomm’s latest Snapdragon 8 Gen 3 chip, which is designed to support on-device AI processing. More specifically, the S24 Ultra has a suite of generative artificial intelligence features, which the company calls «Galaxy AI.» You can, for example, live-translate calls, turn videos shot at normal speed into slow-motion videos or remove unwanted shadows from your photos. CNET’s experts will evaluate all of these AI features in our testing.
We also saw AI photo editing tools in Google’s Pixel 8 series. There’s a Best Take feature, for example, that allows you to swap your favorite facial expression from a sequence of pictures into another photo from the same sequence where you perhaps don’t like your expression as much.
Read more: Google Pixel 8’s ‘Best Take’ Levels Up AI-Enhanced Photos
The S23 Ultra uses last year’s Snapdragon 8 Gen 2 processor. It doesn’t have Galaxy AI yet, but is expected to get it eventually. The iPhone 15 Pro Max has Apple’s latest A17 Pro chip but doesn’t currently have any generative AI photo editing tools like the Galaxy S24 Ultra or the Google Pixel 8 line. I’m interested to see if the iPhone will ever get features like these, especially because AI is such a buzzword right now.
The S23 Ultra runs on Android 13 which will get four years of software and security updates. The S24 Ultra runs on Android 14 which will support 7 years of these updates. The 15 Pro Max runs on iOS 17, and while Apple doesn’t disclose how long it will support its phones with software updates, iOS 17 currently works on models dating back to the 2018 iPhone XS and XR.
Read more: Best Phone to Buy for 2024
The base S23 Ultra comes with 256GB of storage and either 8 or 12GB of RAM. You can also upgrade to 512GB or 1TB storage options, both with 12GB of RAM. The S24 Ultra comes with the same storage options, but all of them have 12GB of RAM. So Samsung has eliminated the 8GB RAM option on its base S24 Ultra model. While Apple doesn’t disclose the RAM on its iPhones, the 15 Pro Max comes with the same storage options as the S23 and S24 Ultra: 256GB, 512GB and 1TB.

All three of these phones have a USB-C port, which is a big deal because all iPhones before the iPhone 15 series either had Lightning ports or 30-pin connectors. The S23 and S24 Ultra support 45-watt fast charging, while the 15 Pro Max supports 27W fast charging. All three phones offer wireless charging, but the Ultras also support reverse wireless charging so you can juice up other devices from the back of these phones. All three phones come with charging cables, but none of them include a charger brick in the box.
The S23 and S24 Ultra have a 5,000-mAh battery. In her S23 Ultra review, CNET’s Lisa Eadicicco found that after 12 hours of use (using the phone to take photos and videos, check her email and socials and stream music), her battery was at 66%. The new model is supposed to have a stronger battery because of its new chip, so we look forward to putting the S24 Ultra’s battery to the test. Apple doesn’t disclose battery capacity, but says the 15 Pro Max has an «all-day battery life» with «up to 29 hours of video playback.» In his 15 Pro Max review, CNET’s Patrick Holland found that after 15 hours of use, the phone usually had 20% to 25% battery left.
The S23 and S24 Ultra both come with the S Pen stylus that you can store inside the phone. I’d love to see something like this for the iPhone, but it doesn’t exist at the moment. Maybe one day. (Tim Cook, I hope you’re reading this.)

The S23 and S24 Ultra both have a 6.8-inch AMOLED display and a 1 to 120Hz variable refresh rate that changes based on how you’re using your phone. So if you’re doing something with lots of screen movement, like playing a video game, the refresh rate will increase. But if you switch to an activity that doesn’t take a lot of movement, like reading an article, the refresh rate will go down. The 15 Pro Max has a 6.7-inch OLED display and also has a variable refresh rate of 1 to 120Hz.
The S23 and S24 Ultra phones don’t have a notch. They just have a hole-punch camera at the top of the screen. The 15 Pro Max does have a notch in the form of the Dynamic Island, a shape-shifting cutout that allows you to view updates from apps like Maps without needing to have them open.
As for how these phones will feel in-hand, the S23 Ultra is 8.9 millimeters thick, the S24 Ultra is 8.6 millimeters thick and the 15 Pro Max is 8.25-millimeters thick. The S23 Ultra has an aluminum frame and weighs 234 grams. The S24 Ultra and 15 Pro Max have titanium frames and weigh 233 grams and 221 grams, respectively. So the 23 Ultra is slightly thicker and heavier than the S24 Ultra and 15 Pro Max, and it has an aluminum frame (rather than titanium).
The S23 and S24 Ultra cameras are similar. Both phones have a four-camera system with identical selfie, ultrawide, wide and 3x telephoto cameras. Each phone also has another telephoto camera for extreme distance shots. The one on the S23 Ultra is 10 megapixels with a 10x optical zoom, while the one on the S24 Ultra is 50 megapixels with a 5x optical zoom. So the S23 and S24 Ultra cameras are basically the same except for that new 50-megapixel, 5x telephoto camera, which is supposed to take sharper zoom photos.
The iPhone 15 Pro Max, on the other hand, has a three camera system. There’s a 48-megapixel main camera, a 12-megapixel ultrawide camera and a 12-megapixel telephoto camera with a 5x optical zoom. And for your selfies, there’s a 12-megapixel front camera. So both the S24 Ultra and the 15 Pro Max have a 5x optical zoom, but the sensor on the S24 Ultra has a higher resolution. Stay tuned for our camera tests to see how the S24 Ultra camera performs in real life, especially against the 15 Pro Max.
For more on how the Galaxy S23 and S24 Ultra and the iPhone 15 Pro Max compare, check out our specs chart below.
Samsung Galaxy S24 Ultra specs vs. Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max
Samsung Galaxy S24 Ultra | Samsung Galaxy S23 Ultra | Apple iPhone 15 Pro Max | |
---|---|---|---|
Display size, tech, resolution, refresh rate, brightness | 6.8-inch AMOLED; QHD+ resolution; 1-120Hz adaptive refresh rate | 6.8-inch AMOLED; 3,088×1,440 pixels; 120Hz adaptive refresh rate | 6.7-inch OLED; 2,796×1,290 pixels; 120Hz adaptive refresh rate |
Pixel density | 501ppi | 500 ppi | 460 ppi |
Dimensions (inches) | 6.40 x 3.11 x 0.34 in | 6.43 x 3.07 x 0.35 in | 6.29 x 3.02 x 0.32 in |
Dimensions (millimeters) | 163 x 79 x 8.6 mm | 163.3 x 78 x 8.9 mm | 159.9 x 76.7 x 8.25 mm |
Weight (grams, ounces) | 233 g (8.22 oz) | 234 g (8.25 oz) | 221 g (7.81 oz) |
Mobile software | Android 14 | Android 13 | iOS 17 |
Camera | 200-megapixel (wide), 12-megapixel (ultrawide) 10-megapixel (3x telephoto) 50-megapixel (5x telephoto) | 200-megapixel (wide), 12-megapixel (ultrawide) 10-megapixel (3x telephoto) 10-megapixel (10x telephoto) | 48-megapixel (wide), 12-megapixel (ultrawide), 12-megapixel (5x telephoto) |
Front-facing camera | 12-megapixel | 12-megapixel | 12-megapixel |
Video capture | 8K | 8K | 4K |
Processor | Qualcomm Snapdragon 8 Gen 3 | Qualcomm Snapdragon 8 Gen 2 for Galaxy | Apple A17 Pro |
Storage and RAM | 12GB RAM + 256GB, 512GB, 1TB | 8GB RAM + 256GB; 12GB RAM + 256GB, 512GB, 1TB | 256GB, 512GB, 1TB (RAM undisclosed) |
Expandable storage | None | None | None |
Battery | 5,000 mAh | 5,000 mAh | Undisclosed; Apple claims up to 29 hours of video playback (25 hours streamed) |
Fingerprint sensor | Under display | Under display | None (Face ID) |
Connector | USB-C | USB-C | USB-C |
Headphone jack | None | None | None |
Special features | Titanium frame, 2,600-nit screen; 7 years of OS and security updates; 5G (mmWave); IP68 water resistance; wireless PowerShare to charge other devices; integrated S Pen; UWB for finding other devices; 45W wired charging (charger not included); Galaxy AI; Wi-Fi 7 | 5G (Sub6, mmWave); IP68 water resistance; wireless PowerShare to charge other devices; integrated S Pen; 100x Space Zoom; 10x optical zoom; UWB for finding other devices; 45W wired charging | 5G (Sub6, mmWave); Action Button, Always-On display, IP68 water resistance, MagSafe, Dynamic Island, 5x optical zoom (120mm equivalent), satellite connectivity, eSIM, thread networking technology |
US price starts at | $1,300 (256GB) | $1,200 (256GB) | $1,199 (256GB) |
UK price starts at | £1,249 (256GB) | £1,249 (256GB) | £1,199 (256GB) |
Australia price starts at | AU$2,199 (256GB) | AU$1,949 (256GB) | AU$2,199 (256GB) |
Editors’ note: CNET is using an AI engine to help create some stories. For more, see this post.
Technologies
Tariffs Explained: Latest on Trump’s Shifting Import Tax Plan, and What It Means
Technologies
Apple, I’m (Sky) Blue About Your iPhone 17 Air Color
Commentary: The rumored new hue of the iPhone 17 Air is more sky blah than sky blue.

I can’t help but feel blue about the latest rumor that Apple’s forthcoming iPhone 17 Air will take flight in a subtle, light-hued color called sky blue.
Sky blue isn’t a new color for Apple. It’s the featured shade of the current M4 MacBook Air, a shimmer of cerulean so subtle as to almost be missed. It’s silver left too close to an aquarium; silver that secretly likes to think it’s blue but doesn’t want everyone else to notice.
Do Apple employees get to go outside and see a real blue sky? It’s actually vivid, you can check for yourself. Perhaps the muted sky blue color reflects a Bay Area late winter/early spring frequent layer of clouds like we typically see here in Seattle.
«Who cares?» you might find yourself saying. «Everyone gets a case anyway.» I hear you and everyone else who’s told me that. But design-focused Apple is as obsessive about colors as they are about making their devices thinner. And I wonder if their heads are in the clouds about which hues adorn their pro products.
Making the case for a caseless color iPhone
I’m more invested in this conversation than most — I’m one of those freaks who doesn’t wrap my phone in a case. I find cases bulky and superfluous, and I like to be able to see Apple’s design work. Also, true story, I’ve broken my iPhone screen only twice: First when it was in a «bumper» that Apple sent free in response to the iPhone 4 you’re-holding-it-wrong Antennagate fiasco, and second when trying to take long exposure starry night photos using what I didn’t realize was a broken tripod mount. My one-week-old iPhone 13 Pro slipped sideways and landed screen-first on a pointy rock. A case wouldn’t have saved it.
My current model is an iPhone 16 Pro in black titanium — which I know seems like avoiding color entirely — but previously I’ve gone for colors like blue titanium and deep purple. I wanted to like deep purple the most but it came across as, in the words of Patrick Holland in his iPhone 14 Pro review, «a drab shade of gray or like Grimace purple,» depending on the light.
Pros can be bold, too
Maybe the issue is too many soft blues. Since the iPhone Pro age began with the iPhone 11 Pro, we’ve seen variations like blue titanium (iPhone 15 Pro), sierra blue (iPhone 13 Pro) and pacific blue (iPhone 12 Pro).
Pacific blue is the boldest of the bunch, if by bold you mean dark enough to discern from silver, but it’s also close enough to that year’s graphite color that seeing blue depends on the surrounding lighting. By comparison, the blue (just «blue») color of the iPhone 12 was unmistakably bright blue.
In fact, the non-Pro lines have embraced vibrant colors. It’s as if Apple is equating «pro» with «sophisticated,» as in «A real pro would never brandish something this garish.» I see this in the camera world all the time: If it’s not all-black, it’s not a «serious» camera.
And yet I know lots of pros who are not sophisticated — proudly so. People choose colors to express themselves, so forcing that idea of professionalism through color feels needlessly restrictive. A bright pink iPhone 16 might make you smile every time you pick it up but then frown because it doesn’t have a telephoto camera.
Color is also important because it can sway a purchase decision. «I would buy a sky blue iPhone yesterday,» my colleague Gael Cooper texted after the first rumor popped online. When each new generation of iPhones arrive, less technically different than the one before, a color you fall in love with can push you into trading in your perfectly-capable model for a new one.
And lest you think Apple should just stick with black and white for its professional phones: Do you mean black, jet black, space black, midnight black, black titanium, graphite or space gray? At least the lighter end of the spectrum has stuck to just white, white titanium and silver over the years.
Apple never got ahead by being beige
I’m sure Apple has reams of studies and customer feedback that support which colors make it to production each year. Like I said, Apple’s designers are obsessive (in a good way). And I must remind myself that a sky blue iPhone 17 Air is a rumored color on a rumored product so all the usual caveats apply.
But we’re talking about Apple here. The scrappy startup that spent more than any other company on business cards at the time because each one included the old six-color Apple logo. The company that not only shaped the first iMac like a tipped-over gumdrop, that not only made the case partially see-through but then made that cover brilliant Bondi blue.
Embrace the iPhone colors, Apple.
If that makes you nervous, don’t worry: Most people will put a case on it anyway.
Technologies
Astronomers Say There’s an Increased Possibility of Life on This Distant Planet
Using the James Webb Space Telescope, astronomers are working to confirm potential evidence of life on a distant exoplanet dubbed K2-18b.

Astronomers are nearing a statistically significant finding that could confirm the potential signs of life detected on the distant exoplanet K2-18b are no accident.
The team of astronomers, led by the University of Cambridge, used data from the James Webb Space Telescope (which has only been in use since the end of 2021) to detect chemical traces of dimethyl sulfide (DMS) and/or dimethyl disulfide (DMDS), which they say can only be produced by life such as phytoplankton in the sea.
According to the university, «the results are the strongest evidence yet that life may exist on a planet outside our solar system.»
The findings were published this week in the Astrophysical Journal Letters and point to the possibility of an ocean on this planet’s surface, which scientists have been hoping to discover for years. In the abstract for the paper, the team says, «The possibility of hycean worlds, with planet-wide oceans and H2-rich atmospheres, significantly expands and accelerates the search for habitable environments elsewhere.»
Not everyone agrees, however, that what the team found proves there’s life on the exoplanet.
Science writer and OpenMind Magazine founder Corey S. Powell posted about the findings on Bluesky, writing, «The potential discovery of alien life is so enticing that it drags even reputable outlets into running naive or outright misleading stories.» He added, «Here we go again with planet K2-18b.Um….there’s strong evidence of non-biological sources of the molecule DMS.»
K2-18b is 124 light-years away and much larger than Earth (more than eight times our mass), but smaller than Neptune. The search for signs of even basic life on a planet like this increases the chances that there are more planets like Earth that may be inhabitable, with temperatures and atmospheres that could sustain human-like lifeforms. The team behind the paper hopes that more study with the James Webb Space Telescope will help confirm their initial findings.
More research to do on finding life on K2-18b
The exoplanet K2-18b is not the only place where scientists are exploring the possibility of life, and this research is still an early step in the process, said Christopher Glein, a geochemist, planetary researcher and lead scientist at San Antonio’s Southwest Research Institute. Excitement over the significance of the research, he said, should be tempered.
«We need to be careful here,» Glein said. «It appears that there is something in the data that can’t be explained, and DMS/DMDS can provide an explanation. But this detection is stretching the limits of JWST’s capabilities.»
Glein added, «Further work is needed to test whether these molecules are actually present. We also need complementary research assessing the abiotic background on K2-18b and similar planets. That is, the chemistry that can occur in the absence of life in this potentially exotic environment. We might be seeing evidence of some cool chemistry rather than life.»
The TRAPPIST-1 planets, he said, are being researched as potentially habitable, as is LHS 1140b, which he said «is another astrobiologically significant exoplanet, which might be a massive ocean world.»
As for K2-18b, Glein said many more tests need to be performed before there’s consensus on life existing on it.
«Finding evidence of life is like prosecuting a case in the courtroom,» Glein said. «Multiple independent lines of evidence are needed to convince the jury, in this case the worldwide scientific community.» He added, «If this finding holds up, then that’s Step 1.»
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