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Samsung Galaxy S24 Ultra Specs vs. S23 Ultra vs. iPhone 15 Pro Max: Premium Phones Compared

Samsung just dropped its Galaxy S24 Ultra phone. How does it compare to last year’s S23 Ultra? Or Apple’s 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 Phone to Buy for 2024

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. 

Samsung’s Galaxy S24 Ultra Now Has a Titanium Design

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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. 

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. 

iPhone 15 Pro Max

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.)

Samsung Galaxy S24 Ultra

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 TBD 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 TBD 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

You Can’t Trust Your Car’s Driving Assistance System Yet, AAA Report Finds

Both hands-on and hands-off systems required human intervention to avoid accidents in this study.

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Technologies

Google’s AI Mode Is Getting New Agentic Features for Restaurant Reservations and More

AI Mode can now do most of the work to find dinner reservations for you.

Google’s AI Mode is getting new agentic capabilities and expanding to 180 new countries and territories around the world, Google announced Thursday. AI Mode allows you to ask questions directly to Google and it’ll kick off a series of searches on your behalf. From there, it will surface relevant information to your query without the need to do any of the deep research yourself. It changes the way you search for things online, and it’s getting even smarter with this latest rollout. 

Powered by DeepMind’s Project Mariner, the latest additions bring us further into the agentic AI future we’ve been promised for some time, directly from a search box. Instead of just finding things for you, AI Mode can now do things for you, like finding dinner reservations, flights or concert tickets. The update also brings personalized recommendations and link-sharing capabilities for easier collaboration with friends and family. 

Most of the new features are either limited to premium AI subscribers and tucked behind an experiment in Google Labs, but it might not take long before they’re a standard part of your future search experience. 

Google did not immediately respond to CNET’s request for further comment.

Restaurant recommendations

Instead of searching for restaurant reservations and then clicking on a specific website to make a reservation, AI Mode surfaces everything you need to complete the action right there. Since it’s contextually aware, you can add specificities to your query that a typical Google search wouldn’t handle well. 

You can add the type of cuisine, number of people, time and location to a single query, and AI Mode will get to work and display real-time restaurant reservation time slots to choose from. 

Google says it’s partnered with OpenTable, Resy, Tock, Ticketmaster and several other companies to make finding and doing what you want easier, since you won’t have to put in the legwork yourself. 

This feature is currently rolling out to Google AI Ultra subscribers in the US who have enabled the specific experiment in Labs.

Personalized recommendations

Another experiment that’s currently available in the US (that also needs to be enabled in Labs) is personalized recommendations. Google says it’s starting with dining-related recommendations, which implies more options will be on the way in the future.

The experiment will use your past conversations with AI Mode, places you’ve interacted with on Search and Maps to provide suggestions tailored specifically to you.

Share AI Mode links with others for collaboration

If you’re planning a vacation or a party, you can now share your research directly with others with a new link-sharing feature built into AI Mode. People who interact with the link will be sent to the last response sent by AI Mode and can continue the conversation on their own to do more exploration on the topic. The original sender of the links can manage them and delete them at any time. 

For more, don’t miss everything Google announced at its Pixel 10 event. 

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Technologies

IPhone or Android, Here’s How to Finally Escape That Endless Group Chat

Done with a group chat? Here’s how to ghost it on any service.

One reason people prefer group chats in Apple’s iMessage or RCS texting is the extra control and security these platforms provide. If everyone in your group is using iPhones, or if you’re on Android chatting through RCS, you’ll get features like typing indicators, high-quality media sharing, and the option to mute or leave a conversation when you need fewer notifications.

The biggest advantage is privacy. Both iMessage and RCS group chats offer end-to-end encryption, so your conversations stay secure. The only time that doesn’t apply is when a thread includes a mix of iPhone and Android users, which limits encryption support.

Knowing these differences can help you manage your chats more effectively, whether you’re keeping up with friends, planning events, or just looking for a little more control over your notifications.

And with RCS support with iOS 18, group chats that include a mix of iPhone and Android participants have more features than ever — but it’s not at the level you’ll experience when a conversation is fully on iMessage or Google Messages. «Green bubble chats» from an iPhone to an Android phone can now include typing indicators, higher-quality media and easier group chats. 

However, RCS conversations between the iPhone and Android phones don’t include encryption now, but it should be added in a future update. This will hopefully give these conversations a similar level of privacy that we expect when using chat services like iMessage, WhatsApp or Signal.

Regardless of how you’re in a group chat with others, you can leave a chat. Here are the steps to leave any conversation from your phone’s texting app, regardless of whether it’s happening on iMessage, RCS or as a mixed MMS chat.

Don’t miss any of CNET’s unbiased tech content and lab-based reviews. Add us as a preferred Google source on Chrome.

Leaving group chats on an iPhone

You can leave group conversations on your iPhone in two ways. You can either mute a chat,which keeps you in a conversation but you no longer receive notifications about it, or you can outright leave and no longer have access to the chat.

On an iPhone, open Messages and go to the chat thread you want to leave. At the top of the screen are conversation controls, a group of icons with the participants. Tap this to open a pop-up menu. As long as your conversation has four or more participants, iOS gives you the ability to tap Leave this Conversation with red text. If your chat has three or fewer participants, though, the option is grayed out, but you can tap Hide Alerts to prevent the conversation from notifying you further. Tapping Hide Alerts also allows you to mute a conversation, letting you keep access to a chat without necessarily leaving it. These steps apply to both iMessage conversations and to those over RCS.

Hide and block MMS chats on an iPhone

Although you can’t officially leave MMS group chats, you can hide or block the conversation. It’s not as good as outright leaving a conversation (other participants will still see you as in it), but you at least have no personal evidence of the conversation continuing.

On an iPhone, visit the group chat and tap the conversation controls. Instead of seeing Leave this conversation, you will see the option to Delete and Block this conversation. If you’d rather just mute the conversation instead of deleting and blocking it, you can hit Hide Alerts to mute it.

Leave group chats on an Android phone

On an Android phone using Google Messages, visit the chat thread you want to leave. Tap the conversation’s name to bring up the Group Details menu. Within this menu is the Leave Group button. Unlike with iMessage, you can leave chats with as few as three participants.

If you want to just mute notifications, tap Notifications on the Group Details screen to bring up a window with notifications controls. This includes options to make the conversation stay Silent to prevent it from ringing your chat, and if you tap Lock Screen, a pop-up menu will give you the option to prevent notifications. Tap Don’t show notifications at all to enable.

Hide and block MMS chats on an Android phone

On an Android phone with Google Messages, follow the same steps to access options for controlling notifications. This includes visiting the MMS chat thread and then tapping either the name of the conversation or the names of the participants at the top to bring up the Group Details menu. You won’t see a Leave Group option like you did with an RCS thread, but you do get the same ability to tap Notifications to access controls for hiding the conversation. This includes the same options for turning the conversation to Silent and to select Don’t show notifications at all.

SMS vs. MMS vs. RCS

SMS stands for Short Message Service and debuted in 1992. Text messages are limited to 160 characters. MMS stands for Multimedia Messaging Service and supports sending photos, videos or other files and messages longer than 160 characters. MMS supports a group of people chatting in a single conversation thread, while SMS can text multiple people at once but is sent as individual messages to each person. RCS, which launched 15 years ago, is short for Rich Communication Services and can show typing indicators, read receipts and has end-to-end encryption.

While cross-platform chat apps like WhatsApp, Signal and Telegram have better controls for conversations, encryption and privacy, regardless of the type of phone participants are using, they don’t support SMS, MMS or RCS. That’s why the default messaging app on most phones is still widely used, even if it means that a group chat is on a less feature-filled, unsecured standard like MMS.

Steps You Can Take Right Now to Avoid an Overheated Phone

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