Apple's new iPhone lineup asks buyers a new and challenging question: Is a foldable display worth feature compromises?


Alongside the iPhone 18 Pro and ‌iPhone 18 Pro‌ Max, which start at $1,199 and $1,299 respectively, there is now the iPhone Duo, Apple's first foldable iPhone, which starts at $1,999. All three are brand new, all three feature the same A20 Pro chip, and all three sit at the top end of Apple's lineup.

The Duo is not a Pro model, though, and Apple's own wording makes that clear. For example, its rear camera array is branded the 48-megapixel Dual Fusion system rather than the Pro Fusion system, and the word Pro appears nowhere in its name. The $700 premium over the ‌iPhone 18 Pro‌ Max buys a folding 7.6-inch display, not a better camera.

All three models still share a large amount of hardware. The shared features include:

• A20 Pro chip with a 6-core CPU, 7-core GPU with Neural Accelerators, dual 16-core Neural Engine, and hardware-accelerated ray tracing


• Apple C2 modem (except on the Pro Max in the United States), N1 wireless networking chip, Wi-Fi 7, Bluetooth 6, Thread, and the second-generation Ultra Wideband chip


• Super Retina XDR OLED displays with ProMotion up to 120Hz, Always-On display, Dynamic Island, and 3000 nits of peak outdoor brightness


• Ceramic Shield 2 front with 3x better scratch resistance, Ceramic Shield back, and IP68 water resistance to a depth of 6 meters


• Camera Control, a 48MP Fusion Ultra Wide camera at 13mm and f/2.2, Photographic Styles 3, Dual Capture, smart focus tracking, and 48MP macro photography


• Apple Intelligence and Siri AI in iOS 27


• Emergency SOS, Crash Detection, Roadside Assistance, Messages, and Find My via satellite


• USB-C with USB 3 speeds, MagSafe and Qi2 wireless charging up to 25W, and dual eSIM


• 256GB, 512GB, 1TB, and 2TB storage options

The comparison below outlines every difference between the Pro models and the Duo:

Display

‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max	‌iPhone Duo‌
iPhone 18 Pro: 6.3-inch display iPhone 18 Pro Max: 6.9-inch display	7.6-inch inner folding display and 5.4-inch outer display
iPhone 18 Pro: 2622-by-1206 resolution at 460 ppi iPhone 18 Pro Max: 2868-by-1320 resolution at 460 ppi	Outer display: 1398-by-2034 at 460 ppi Inner display: 1878-by-2670 at 430 ppi
	Nano-texture finish and wide-angle OLEDs on the inner display
	Supports Apple Pencil with USB-C

Design and Build

‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max	‌iPhone Duo‌
Aluminum unibody	Polished titanium frame with a 3D-printed hinge cover
Action button
Face ID enabled by TrueDepth technology	Touch ID in the side button
Dual ambient light sensors	Four ambient light sensors
Compatible with ‌MagSafe‌ cases, wallets, and wireless chargers	Compatible with ‌MagSafe‌ cases and wireless chargers
Black, Silver, Glacier, and Burgundy options	Night Sky and Star White options
Made with 40% recycled content, including 85% recycled aluminum in the enclosure, 100% recycled rare earth elements in all magnets, 80% recycled steel in the battery enclosure and vapor chamber chassis, and 100% recycled tungsten in the Taptic Engine	Made with 35% recycled content, including 100% recycled aluminum in the internal structural frame, 85% recycled titanium in the enclosure, and 100% recycled titanium in the 3D-printed hinge cover
50% of manufacturing electricity sourced from renewable electricity	60% of manufacturing electricity sourced from renewable electricity

Dimensions and Weight

	‌iPhone 18 Pro‌	‌iPhone 18 Pro‌ Max	‌iPhone Duo‌
Height	5.91 inches (150.0 mm)	6.43 inches (163.4 mm)	4.64 inches (117.8 mm) closed 4.64 inches (117.8 mm) open
Width	2.83 inches (71.9 mm)	3.07 inches (78.0 mm)	3.31 inches (84.1 mm) closed 6.48 inches (164.6 mm) open
Depth	0.34 inch (8.75 mm)	0.34 inch (8.75 mm)	0.44 inch (11.3 mm) closed 0.21 inch (5.2 mm) open
Weight	7.44 ounces (211 grams)	8.78 ounces (249 grams)	8.96 ounces (254 grams)

Rear Cameras

‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max	‌iPhone Duo‌
48MP Pro Fusion camera system	48MP Dual Fusion camera system
48MP Fusion Main camera: 24mm, second-generation sensor-shift OIS, 100% Focus Pixels	48MP Fusion Main camera: 26mm, sensor-shift OIS, Hybrid Focus Pixels
Variable aperture on Main camera: f/1.48, f/1.8, f/2.8, and f/4.0	Fixed f/1.6 aperture on Main camera
12MP optical-quality 2x "telephoto" sensor crop at 48mm from the Main camera	12MP optical-quality 2x "telephoto" sensor crop at 52mm from the Main camera
48MP Fusion Telephoto camera: 100mm (4x), f/2.8, tetraprism, 3D sensor-shift OIS and autofocus
12MP optical-quality 8x Telephoto sensor crop at 200mm, f/2.8, from the Fusion Telephoto camera
LiDAR scanner
0.5x, 1x, 2x, 4x, and 8x optical zoom options	0.5x, 1x, and 2x optical zoom options
8x optical-quality zoom in, 2x optical zoom out, for a 16x optical-quality zoom range	2x optical-quality zoom in, 2x optical zoom out, for a 4x optical-quality zoom range
Digital zoom up to 40x for photos and up to 24x for video	Digital zoom up to 10x for photos and up to 6x for video
Adaptive True Tone flash	True Tone flash
Four studio-quality mics
	Smart Take and Duo Preview

Pro Capture Features and Formats

‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max	‌iPhone Duo‌
Pro controls for lens aperture, shutter speed, white balance, and viewing histogram
ProRAW
Apple Reference Image (Fusion Main camera only)
Spatial photos
Spatial video recording at 1080p at 30 fps
ProRes video recording up to 4K at 120 fps with external recording
ProRes RAW video recording
Apple Log 2
Academy Color Encoding System (ACES)
Genlock
Image formats captured: HEIF, JPEG, and DNG	Image formats captured: HEIF and JPEG
Video formats recorded: HEVC, H.264, ProRes, and ProRes RAW	Video formats recorded: HEVC and H.264
Video playback formats include HEVC, H.264, AV1, and ProRes	Video playback formats include HEVC, H.264, and AV1

Front Cameras

‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max	‌iPhone Duo‌
18MP Center Stage front camera, f/1.9	12MP Center Stage outer camera, f/2.2
Autofocus with Focus Pixels on the front camera
Front camera Pro controls, ProRAW, ProRes, ProRes RAW, Apple Log 2, and Academy Color Encoding System
	Kid Cue on the front camera
	Under-display FaceTime camera on the inner display, f/1.8, limited to 1080p video at 30 or 60 fps with no Night mode, portraits, or Photographic Styles
	Duo ‌FaceTime‌
Optical zoom with the rear camera in ‌FaceTime‌	Zoom with the rear camera in ‌FaceTime‌

Battery and Charging

‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max	‌iPhone Duo‌
Built-in rechargeable battery	Dual built-in rechargeable batteries
iPhone 18 Pro: Up to 24 hours typical use iPhone 18 Pro Max: Up to 30 hours typical use	Up to 24 hours typical use
iPhone 18 Pro: Up to 36 hours video playback iPhone 18 Pro Max: Up to 45 hours video playback	Up to 44 hours using the outer display, up to 31 hours using the inner display
iPhone 18 Pro: Up to 33 hours streamed video playback iPhone 18 Pro Max: Up to 40 hours streamed video playback	Up to 37 hours streamed using the outer display, up to 26 hours using the inner display
50% charge in around 15 minutes	50% charge in around 20 minutes

Price

	‌iPhone 18 Pro‌	‌iPhone 18 Pro‌ Max	‌iPhone Duo‌
256GB	$1,199	$1,299	$1,999
512GB	$1,399	$1,499	$2,199
1TB	$1,799	$1,899	$2,599
2TB	$2,399	$2,499	$3,199

For most buyers, the ‌iPhone 18 Pro‌ or ‌iPhone 18 Pro‌ Max is the better choice. They offer the same A20 Pro chip as the Duo, a more versatile camera system, and a lower price. Choose the Pro if you prefer a smaller, lighter phone, or pay $100 more for the Pro Max if you want a larger screen and longer battery life.

The camera system is the clearest reason to choose an ‌iPhone 18 Pro‌ over the ‌iPhone Duo‌. Alongside a more advanced Main camera, the Pro models offer a variable aperture for greater control over depth of field and a dedicated Telephoto camera for subjects you cannot get close to. These advantages matter even if you never use professional capture formats: The Pro gives you more flexibility both when framing a shot and when controlling how it looks. If photography or videography is a priority, choose the ‌iPhone 18 Pro‌. Buyers who also use ProRAW, ProRes, or manual controls have even more reason to do so.

The ‌iPhone Duo‌ is worth considering if you frequently wish your phone had a larger screen for reading, documents, taking notes, or watching video. Its 7.6-inch folding display and ‌Apple Pencil‌ support are unique in the iPhone lineup and could reduce the need to carry a separate tablet. If you would unfold it several times a day for those sorts of tasks, the benefit may outweigh the camera compromises and higher price. If most of your use involves messaging, social media, and taking photos, there is less reason to pay extra for the ‌iPhone Duo‌.

The compromises also extend beyond the rear cameras. Both of its front-facing cameras are also inferior. The ‌iPhone Duo‌ also replaces ‌Face ID‌ with ‌Touch ID‌ and drops the Action button, so buyers will need to adjust. It also lacks the Pro models' LiDAR Scanner, adaptive True Tone flash, four studio-quality microphones, and spatial photo and video recording.

You also need to be comfortable with the Duo when it is closed. Despite its smaller outer screen, it is wider and thicker than either Pro model and slightly heavier than the Pro Max. Battery life is another reason to favor the Pro Max: The Duo matches the smaller Pro's rated typical-use battery life, and using its inner display reduces its video playback time substantially.

The price gap remains significant at every storage tier. A 1TB ‌iPhone 18 Pro‌ Max is only $100 cheaper than the entry-level ‌iPhone Duo‌, but that Duo has just 256GB of storage. At the same capacity, you pay $700 more than the Pro Max or $800 more than the Pro. That premium needs to be justified by how much you would use the folding screen and how much you care about some of the device's compromises.

Buy the Duo if you have a clear idea of the things you would regularly unfold it to do, or if experiencing Apple's first foldable and a radically new kind of iPhone is itself worth the premium to you. If you are unsure how the larger screen would fit into your routine, the Pro models remain the stronger purchase with their traditional "slab" form factor and host of superior specifications.

The ‌iPhone 18 Pro‌ and ‌iPhone 18 Pro‌ Max are available to pre-order now. ‌iPhone Duo‌ pre-orders open on October 16 ahead of an October 23 release.
This article, "iPhone 18 Pro vs. iPhone Duo Buyer's Guide: Which Should You Choose?" first appeared on MacRumors.com

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Apple memory supplier SK Hynix is in exploratory talks with Intel about manufacturing memory chips in the United States for the first time, according to Reuters.


One option would see the South Korean chipmaker lease part of Intel's planned manufacturing complex in Ohio. Another would involve a joint venture with Intel and major cloud providers seeking to secure memory supplies, people familiar with the discussions said. No decisions have been made, and other arrangements remain possible.

SK Hynix supplies Apple with memory alongside Samsung and Micron. The discussions come as AI infrastructure spending puts pressure on the supply of memory for consumer devices, including iPhones and Macs. Chipmakers have been directing more production capacity toward high-bandwidth memory (HBM) for AI processors, leaving smartphone and computer manufacturers competing for available supplies.

In February, Apple reportedly agreed to pay Samsung twice as much for memory chips needed for iPhone 17 production. More recently, analyst Ming-Chi Kuo said Apple was reducing its 2026 hardware shipment plans because of DRAM shortages, with supply constraints also affecting the Mac Studio, Mac mini, and MacBook Air.

It remains unclear which types of memory SK Hynix would manufacture under a potential agreement with Intel. Its products include DRAM used in smartphones, computers, and servers, NAND flash storage, and HBM for AI processors. The report does not mention whether a U.S. facility would produce memory for Apple devices.

SK Hynix already has an advanced packaging facility under construction in West Lafayette, Indiana. That project will package DRAM wafers manufactured in South Korea into HBM chips, rather than fabricate the wafers domestically.
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Apple today announced "What Holds Us," a photography exhibition featuring work shot exclusively on the iPhone 18 Pro by Alex Prager, Jack Davison, and Jimmy Chin. Curated by Kathy Ryan, the exhibition explores human connection through crowd scenes, portraits involving clay, and mountain photography.

The exhibition will be on display in New York City from September 18 to 20, before traveling to London and Shanghai over the coming months. You can see many of the exhibition's images in Apple's Newsroom post.
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Apple is considering offering an AI server built around "M8" series chips and has discussed incorporating Nvidia networking hardware, The Information reports.



The system would be sold to outside customers, potentially bringing Apple back into a business it left behind when it discontinued Xserve in 2011. Apple is reportedly targeting companies that want to run AI models on their own equipment, with a particular focus on inference and generating responses from trained models.

One option under consideration is Nvidia's NVLink Fusion, which provides hardware and software for exchanging data between chips. Apple could use the platform to link its M8 processors, although neither the Nvidia arrangement nor the server itself is finalized. The report places a potential release date in 2029, but it could be canceled before then.

Apple CEO John Ternus reportedly supported the initiative when work on it began approximately a year ago, during his tenure as the company's hardware engineering chief. The project follows growing interest in Apple hardware among AI businesses, which have been buying Mac mini and Mac Studio systems in large quantities.

Apple already produces server hardware for Private Cloud Compute, the infrastructure that handles Apple Intelligence tasks requiring processing beyond a user's device. According to the report, scaling Apple's existing connections between chips would present cost and speed problems, which is why it is considering Nvidia's technology. Apple has also declined partners' requests to use those Private Cloud Compute servers.

An agreement would give Nvidia a role in an Apple product that could compete with its own AI systems. NVLink Fusion allows Nvidia to supply networking technology to companies building alternative processors, expanding its business beyond customers using Nvidia chips.

The discussions also suggest a closer working relationship between Apple and Nvidia following their longstanding disputes. Apple has already announced plans to extend Private Cloud Compute to Google Cloud using Nvidia GPUs. The companies have reportedly explored additional ways to work together on AI, including the use of Nvidia's open-source models.

The project still faces challenges beyond developing the hardware. There is still said to be a need for stronger support for business customers and more software resources for AI developers, including further investment in its MLX framework.
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The Apple Watch Ultra 4 is now available for pre-order, bringing a new health sensing system, more memory, and longer battery life over its predecessor. Here's everything that's new.


Last year, the Apple Watch Ultra 3 introduced a larger, more efficient display, satellite connectivity, 5G, and improved battery life. The Ultra 4 retains the same basic design and display, but focuses on more detailed health and fitness insights, new Audio Intelligence features, and further battery life improvements.

It launches on Friday, September 18, at the same $799 starting price as the Ultra 3. The comparison below outlines the differences between the two generations:

Apple Watch Ultra 3	Apple Watch Ultra 4
S10 chip (2024)	S11 chip (2026)
2GB RAM	4GB RAM
Electrical heart sensor	"Health Sensing System" with second-generation electrical heart sensor
Third-generation optical heart sensor	Always-on optical heart sensor
Background heart rate tracking	High-frequency background heart rate tracking every five seconds, 60x more frequently
HRV	Recovery HRV and overall HRV, measured up to 24x more often
Vitals app with heart rate, respiratory rate, wrist temperature, and sleep duration	Vitals app heart rate, respiratory rate, wrist temperature, sleep duration, HRV, and a daytime vitals view
	Readiness app
	Real-time heart rate complication
Step tracking	More accurate step tracking and indoor workout distance measurements
	Steps complication
	Audio Intelligence (Live Rewind, Siri Recap, Sound Recognition, and automatic music identification with Shazam)
Up to 42 hours of normal use	Up to 50 hours of normal use
Up to 72 hours in Low Power Mode	Up to 84 hours in Low Power Mode
Up to 14 hours of outdoor workout tracking with full GPS and heart rate readings	Up to 18 hours of standard outdoor workout tracking
Up to 20 hours of outdoor workout tracking in Low Power Mode with full GPS and heart rate readings	Up to 25 hours in Extended Workout mode with full GPS and heart rate readings
Up to 35 hours of outdoor workout tracking in Low Power Mode with Fewer GPS and Heart Rate Readings enabled	Up to 45 hours in Max Extended Workout mode, retaining GPS readings every second
15 minutes of charging for up to 12 hours of normal use	15 minutes of charging for up to 18 hours of normal use
5 minutes of charging for up to 8 hours of sleep tracking	5 minutes of charging for up to 10 hours of sleep tracking
Natural titanium: 61.6 grams Black titanium: 61.8 grams	Natural titanium: 63.0 grams Black titanium: 63.1 grams
GPS, GLONASS, Galileo, QZSS, and BeiDou	GPS, Galileo, QZSS, and BeiDou
40% recycled content	45% recycled content
Now discontinued	From $799

Is It Worth Upgrading From Ultra 3 to Ultra 4?

For the vast majority of Apple Watch Ultra 3 owners, the Ultra 4 is not worth upgrading to. The Ultra 3 already offers all of the headline display, durability, satellite connectivity, and established health features. If it comfortably lasts between your usual charging sessions and records your longest workouts, the new model is unlikely to meaningfully change how you use your watch.

The strongest reason to upgrade is if you want recovery tracking to play a larger role in your training. The Ultra 4's more frequent measurements feed into Readiness and Recovery HRV, making it easier to assess when to push harder or take a lighter day. These features are more compelling if you will regularly use them to adjust your training, rather than simply check another set of health metrics.

Battery life is a more practical reason for endurance athletes. If you currently change settings to finish long events or recharge during an extended outing, the Ultra 4 gives you a little more flexibility. For shorter daily workouts, however, the improvement mainly means less frequent charging, which is difficult to justify replacing a year-old $799 watch for.

Audio Intelligence may also justify upgrading for specific users, particularly deaf or hard of hearing users who would benefit from Sound Recognition on their wrist. Live Rewind and Siri Recap are less convincing reasons to upgrade immediately, since they arrive in beta later this year and require a compatible newer iPhone.

Should You Buy Ultra 3 or Ultra 4?

For new buyers, the Ultra 4 should be the default choice when the price difference is modest. If you plan to wear it for several years, paying a little more for the new chip, more memory, better battery life, and health tracking enhancements is easier to justify than replacing an Ultra 3 you already own.

The Ultra 3 becomes the better value when it is heavily discounted. If you mainly want a "rugged"-style Apple Watch with a large screen, satellite connectivity, and enough battery life for everyday use and regular workouts, it delivers much of the same experience. Buyers interested in Readiness and recovery insights, or who regularly record very long activities, have a stronger reason to pay more for the Apple Watch Ultra 4.

For used or refurbished Ultra 3 models, factor battery condition and warranty coverage into the saving. A cheaper watch with a degraded battery is less appealing if endurance is your main reason for buying an Ultra.
This article, "Apple Watch Ultra 3 vs. Ultra 4 Buyer's Guide" first appeared on MacRumors.com

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