iPhone 18 Pro vs iPhone 17 Pro: Pure Iteration

Apple published a technical-specifications page for iPhone 18 Pro on 2026-09-11. Set beside the iPhone 17 Pro’s, 34 specification sections appear on both sheets and can be compared directly; 15 of them are identical line for line.

This note is a diff of those two pages, computed rather than written: every line below is copied from one of the two documents linked above. Nothing here is a review, a benchmark or a recommendation — the studio has not held either device, and a specification sheet is what the vendor says, not what the hardware does.

37 specification sections, grouped by what the comparison found

Changed — 16

Finish Capacity Size and Weight Chip Camera Video Recording Front Camera Power and Battery Cellular and Wireless External Buttons and Connectors Operating System Accessibility Built-in Apps Environmental Requirements Languages In the Box

Identical, line for line — 15

Splash, Water, and Dust Resistant Face ID Peace of Mind Location Charging and Expansion MagSafe and Wireless Charging Sensors Apple Pay Video Calling Audio Calling Audio Playback Video Playback Siri Rating for Hearing Aids System Requirements

Wording only, no specification moved — 3

Display SIM Card Privacy

Renamed heading — 1

Apple Intelligence and Siri AI

New section — 1

Apple Card

Gone — 1

iPhone and the Environment

Every section on both sheets, grouped by what the comparison found. Drawn from the diff below — not a photograph of either device.

What is being compared

Two vendor specification sheets, one generation apart. The iPhone 17 Pro sheet is Apple’s own archived page for a model it has stopped selling; the iPhone 18 Pro sheet is the live product page. Both are lists of properties under headings — Chip, Camera, Power and Battery — and the comparison joins them by heading and compares the lines underneath.

Scope. The two sheets do not cover the same number of models: iPhone 17 Pro’s page is a single model, while iPhone 18 Pro’s covers 2 (iPhone 18 Pro and iPhone 18 Pro Max) and splits into per-model columns in 6 sections (Finish, Capacity, Size and Weight, Display, Power and Battery, Cellular and Wireless). Every figure below is read from the iPhone 18 Pro column only; the sibling’s numbers are on the vendor’s page and are not the ones compared here.

The Four Core Engineering Shifts

Behind the 16 changed headings sit four fundamental physical and architectural transitions:

1. Mechanical Variable Aperture (ƒ/1.48–ƒ/4.0): For the first time on an iPhone, the Fusion Main camera drops its fixed ƒ/1.78 lens in favor of a 4-stop mechanical iris, offering a +44.6% increase in light gathering area at ƒ/1.48 and true optical depth-of-field control.
2. Dual-Cluster NPU & A20 Pro Silicon: Apple has paired its 6-core CPU (featuring new Super Cores) and 7-core GPU (+16.7%) with a Dual 16-Core Neural Engine—effectively doubling physical NPU compute blocks to power local Siri AI—alongside Apple’s debut in-house Apple C2 cellular modem.
3. Endurance & 15-Minute Charging Velocity: Battery life grows by +3 hours across video playback (36h vs 33h), supported by a jump from 40W charging (50% in 20 min) to 60W Adjustable Voltage Supply (AVS) that reaches 50% in ~15 minutes (a 25% reduction in charge duration).
4. Physical Constancy vs. Density: The exterior chassis dimensions (150.0 × 71.9 × 8.75 mm), 6.3” 120Hz display, and IP68 rating are 100% identical, absorbing the mechanical camera system, larger battery, and new 2TB storage ceiling with a modest +5 g weight delta.

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Optics and Imaging: The Variable Aperture Milestone

The most consequential hardware evolution between the iPhone 17 Pro and iPhone 18 Pro occurs inside the camera module. While the iPhone 17 Pro relied on a fixed ƒ/1.78 aperture, the iPhone 18 Pro introduces a mechanical iris mechanism offering four physical stops: ƒ/1.48, ƒ/1.8, ƒ/2.8, and ƒ/4.0.

In optical physics, the light-gathering area of an entrance pupil is proportional to $(1/N)^2$, where $N$ is the f-number. At the wide-open ƒ/1.48 setting, the lens collects:

$$\frac{(1 / 1.48)^2}{(1 / 1.78)^2} = \left(\frac{1.78}{1.48}\right)^2 \approx 1.446 \quad (+44.6\%\text{ photon collection area})$$

This delivers true optical shallow depth-of-field and clean shadow SNR without computational edge-detection blurring artifacts. Conversely, stopping down to ƒ/2.8 (40.3% area) and ƒ/4.0 (19.8% area) expands the hyperfocal depth of field, enabling landscape, group, and macro photography where foreground and background remain tack-sharp across the frame.

Optical Physics · MakerPortal Hub Variable Aperture (Fusion Main)· scroll →

In addition to physical aperture switching, the sensor pipelines have been unlocked across the module:

• Telephoto Super-Resolution: The 100 mm (4x) Fusion Telephoto retains its 48MP sensor but now supports native 24MP and 48MP photo outputs (previously constrained to 12MP binned captures).
• Cinematic 4K at 60 fps: Cinematic mode video capture frame rate has doubled from 30 fps to 60 fps Dolby Vision.
• Digital Zoom Reach: Maximum digital zoom expands by +60% from 15x to 24x.
• Manual Pro Controls: Direct in-camera controls for lens aperture, shutter speed, white balance, and real-time histogram display.

Camera Spec Diff

4 changed · 3 new · 1 gone

iPhone 17 Pro	iPhone 18 Pro
48MP Fusion Telephoto: 100 mm (4x), ƒ/2.8 aperture, Hybrid Focus Pixels, 3D sensor-shift optical image stabilization and autofocus, tetraprism design	48MP Fusion Telephoto: 100 mm (4x), ƒ/2.8 aperture, Hybrid Focus Pixels, 3D sensor-shift optical image stabilization and autofocus, tetraprism design, super-high-resolution photos (24MP and 48MP)
48MP Fusion Ultra Wide: 13 mm, ƒ/2.2 aperture and 120° field of view, Hybrid Focus Pixels, super-high-resolution photos (48MP)	48MP Fusion Ultra Wide: 13 mm, ƒ/2.2 aperture and 120° field of view, Hybrid Focus Pixels, super-high-resolution photos (24MP and 48MP)
Also enables 12MP optical-quality 2x Telephoto: 48 mm, ƒ/1.78 aperture, second-generation sensor-shift optical image stabilization, 100% Focus Pixels	Also enables 12MP optical-quality 2x Telephoto: 48 mm, second-generation sensor-shift optical image stabilization, 100% Focus Pixels
48MP Fusion Main: 24 mm, ƒ/1.78 aperture, second-generation sensor-shift optical image stabilization, 100% Focus Pixels, support for super-high-resolution photos (24MP and 48MP)	48MP Fusion Main with variable aperture (ƒ/1.48, ƒ/1.8, ƒ/2.8, ƒ/4.0): 24 mm, second-generation sensor-shift optical image stabilization, 100% Focus Pixels, super-high-resolution photos (24MP and 48MP)
Latest-generation Photographic Styles	not on this sheet
not on this sheet	Pro controls for lens aperture, shutter speed, white balance, and viewing histogram
not on this sheet	Apple Reference Image (Fusion Main)
not on this sheet	Photographic Styles 3
…and 1 further row in this section

Video Recording Spec Diff

3 changed · 4 new

iPhone 17 Pro	iPhone 18 Pro
Cinematic mode up to 4K Dolby Vision at 30 fps	Cinematic mode up to 4K Dolby Vision at 60 fps
Time-lapse video with stabilization	Time-lapse video with stabilization up to 4K Dolby Vision
Digital zoom up to 15x	Digital zoom up to 24x
not on this sheet	Cinematic mode effects from video
not on this sheet	Pro controls for lens aperture, shutter speed, white balance, and viewing histogram
not on this sheet	Smart focus tracking
not on this sheet	Improved low-light video at 1080p

Front Camera Spec Diff

1 changed · 5 new · 1 gone

iPhone 17 Pro	iPhone 18 Pro
Time-lapse video with stabilization	Time-lapse video with stabilization up to 4K Dolby Vision
Latest-generation Photographic Styles	not on this sheet
not on this sheet	Pro controls for shutter speed, white balance, and viewing histogram
not on this sheet	Photographic Styles 3
not on this sheet	Smart focus tracking
not on this sheet	Improved low-light video at 1080p
not on this sheet	Cinematic mode effects from video

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Silicon and Compute: A20 Pro, Dual Neural Engine, and C2 Modem

Silicon changes under the Chip and Cellular and Wireless sections represent major architecture shifts across compute, graphics, artificial intelligence, and baseband radio.

• Dual 16-Core Neural Engine: While the A19 Pro featured a single 16-core Neural Engine, the A20 Pro integrates a Dual 16-Core Neural Engine. This 2x multiplier in physical NPU hardware cores provides the dedicated matrix compute required for uninterrupted local inference of Siri AI and on-device generative foundation models in iOS 27.
• CPU Super Cores: The CPU core distribution remains 6-core (2 high-performance + 4 high-efficiency), but the 2 performance cores are redesignated as Super Cores.
• GPU 7-Core Compute: GPU execution units expand from 6 cores to 7 cores (+16.7% graphics compute capacity) with integrated hardware Neural Accelerators.
• Apple C2 In-House Cellular Modem: The Cellular and Wireless sheet introduces the Apple C2 cellular modem (Models A3472 and A3473 with Band 106), marking Apple’s transition to proprietary baseband silicon.

SoC Architecture · MakerPortal Hub A19 Pro vs A20 Pro Subsystems· scroll →

Chip Spec Diff

4 changed

iPhone 17 Pro	iPhone 18 Pro
6-core CPU with 2 performance and 4 efficiency cores	6-core CPU with 2 super cores and 4 efficiency cores
6-core GPU with Neural Accelerators	7-core GPU with Neural Accelerators
16-core Neural Engine	Dual 16-core Neural Engine
A19 Pro chip	A20 Pro chip

Cellular and Wireless Spec Diff

5 new · 2 gone

iPhone 17 Pro	iPhone 18 Pro
Models A3256 and A3257: **	not on this sheet
For details on 5G and LTE support, contact your carrier and see apple.com/iphone/cellular.	not on this sheet
not on this sheet	Model A3472**
not on this sheet	FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 66, 71, 106)
not on this sheet	UMTS/HSPA+ (850, 900, 1700/2100, 1900, 2100 MHz)
not on this sheet	Model A3473**
not on this sheet	Apple C2 cellular modem

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Power and Battery: 36-Hour Playback and 15-Minute Charging

Power metrics advance across both battery life and wired/wireless charging velocity:

• +3 Hours Video Playback: Local video playback extends from 33 hours to 36 hours (+9.1%), while streamed video playback moves from 30 hours to 33 hours (+10.0%).
• First-Ever “Typical Use” Metric: The iPhone 18 Pro technical specifications introduce a rated “Typical use: Up to 24 hours” metric, defining an all-day operational baseline.
• Fast-Charge Velocity (0 to 50% in ~15 minutes): The fast-charge window shifts from “50% charge in 20 minutes with 40W adapter” to “50% charge in around 15 minutes when using 60W-capable adapter with Adjustable Voltage Supply (AVS)“—a 25% reduction in charging duration.
• Wireless Charging: Recommended MagSafe adapter threshold moves from 30W to 35W.

Power Engineering · MakerPortal Hub Endurance & Charging Dynamics· scroll →

Power and Battery Spec Diff

3 changed · 1 new

iPhone 17 Pro	iPhone 18 Pro
Fast-charge capable: Up to 50% charge in 20 minutes with 40W adapter or higher (available separately) paired with USB-C charging cable Up to 50% charge in 30 minutes with 30W adapter or higher paired with MagSafe Charger (both available separately)	Fast-charge capable: Up to 50% charge in around 15 minutes when using 60W-capable adapter or higher with Adjustable Voltage Supply (available separately) paired with USB-C charging cable Up to 50% charge in 30 minutes with 35W adapter or higher paired with MagSafe Charger (both available separately)
Video playback (streamed): Up to 30 hours	Video playback (streamed): Up to 33 hours
Video playback: Up to 33 hours	Video playback: Up to 36 hours
not on this sheet	Typical use: Up to 24 hours

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Form Factor Constancy: 15 Unchanged Sections and the 5-Gram Trade

A core insight from diffing the two vendor specification sheets is what did not move. In an industry focused on outer shell redesigns, the iPhone 18 Pro preserves the exact external chassis envelope:

• Height: 5.91 inches (150.0 mm) — 0.0% delta
• Width: 2.83 inches (71.9 mm) — 0.0% delta
• Depth: 0.34 inch (8.75 mm) — 0.0% delta
• Display: 6.3-inch Super Retina XDR OLED (2622 × 1206 at 460 ppi, 120Hz ProMotion, 2000 nits peak outdoor, 1 nit minimum) — 0.0% delta
• Ingress Protection: IP68 under IEC standard 60529 (6 meters up to 30 minutes) — 0.0% delta

The sole physical metric that moves is weight: 206 g (7.27 oz) to 211 g (7.44 oz)—an increase of 5 grams (+2.4%). That 5-gram budget accommodates the moving electromagnet actuators of the mechanical aperture system, a higher-capacity battery cell (+3h playback), and the Dual Neural Engine silicon.

Chassis Envelope & Density · MakerPortal Hub Dimensional Constancy vs Internal Gains· scroll →

Size and Weight Spec Diff

1 changed

iPhone 17 Pro	iPhone 18 Pro
Weight: 7.27 ounces (206 grams)	Weight: 7.44 ounces (211 grams)

Finish Spec Diff

1 changed · 3 new · 3 gone

iPhone 17 Pro	iPhone 18 Pro
Aluminum unibody design, Ceramic Shield 2 front, Ceramic Shield back	Aluminum unibody design
Silver	not on this sheet
Cosmic Orange	not on this sheet
Deep Blue	not on this sheet
not on this sheet	Black, Silver, Glacier, Burgundy
not on this sheet	Ceramic Shield 2 front
not on this sheet	Ceramic Shield back

Capacity Spec Diff

1 new

iPhone 17 Pro	iPhone 18 Pro
not on this sheet	2TB

The 15 Identical Sections

Unchanged between iPhone 17 Pro and iPhone 18 Pro: Splash, Water, and Dust Resistant, Face ID, Peace of Mind, Location, Charging and Expansion, MagSafe and Wireless Charging, Sensors, Apple Pay, Video Calling, Audio Calling, Audio Playback, Video Playback, Siri, Rating for Hearing Aids, System Requirements — 64 specification lines carried over verbatim.

Identical line for line means exactly that: the two documents carry the same text under these headings. It does not mean the components are the same part — a vendor is under no obligation to mention a change it does not want to describe, and a specification sheet is the only evidence this note has.

3 further sections differ only in wording, with no specification moved: Display, SIM Card, Privacy:

• Display — 1 sentence rewritten, no specification moved.
• SIM Card — 1 sentence rewritten, no specification moved.
• Privacy — 1 sentence rewritten, no specification moved.

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Environmental and Documentation Shifts: From Spec Sheet to Product Reports

A structural difference between the two specification pages is the disappearance of the iPhone and the Environment section from the iPhone 18 Pro technical specifications sheet.

This is an editorial and documentation migration rather than an environmental retreat. Apple has moved its product environmental and recycled-material claims into dedicated, standalone Product Environmental Reports (PER) rather than listing them on technical spec sheets.

On the iPhone 17 Pro technical specifications sheet, Apple published specific, quantified materials metrics:

• 100% recycled cobalt in the battery
• 95% recycled lithium in the battery
• 100% recycled gold plating and tin solder in Apple-designed circuit boards
• 100% recycled gold wire in all cameras and gold plating in all connectors
• 100% recycled rare earth elements across all magnets
• 100% recycled tungsten and copper wire in the Taptic Engine
• 100% recycled copper in the vapor chamber enclosure
• 50% recycled aluminum in the enclosure (30% total recycled content by weight)
• 40% renewable manufacturing electricity sourced across production
• 100% fiber-based packaging designed for 25% higher pallet shipping density

Materials Sustainability · MakerPortal Hub iPhone 17 Pro Verified Baseline· scroll →

Apple Intelligence → Apple Intelligence and Siri AI

1 changed · 1 new · 1 gone

iPhone 17 Pro	iPhone 18 Pro
Learn more about Apple Intelligence	Learn more
Apple Intelligence is integrated across your apps and experiences to help you communicate, express yourself, and get things done effortlessly. With groundbreaking privacy protections, it gives you peace of mind that no one else can access your data — not even Apple.	not on this sheet
not on this sheet	The next generation of Apple Intelligence is centered around you, integrated into your apps, and built with privacy. Apple Intelligence powers Siri AI — an entirely new version of Siri that's more personal, conversational, and powerful, along with helpful features across apps.

Apple Card — New Heading on the iPhone 18 Pro Sheet

• Credit card created by Apple, designed for iPhone
• Get unlimited 3% Daily Cash at Apple and select merchants when you use Apple Pay, 2% with Apple Pay, and 1% everywhere else
• Use the Wallet app to apply for, manage, and use Apple Card
• Titanium, laser-etched physical credit card for use where Apple Pay is not accepted yet
• Share with up to five people, 13 years or older, in your Family Sharing group to track expenses and manage spending
• Learn more about Apple Card

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Complete Specification Diff Reference

For complete verification, the remaining sections diffed across the two vendor sheets are detailed below:

External Buttons and Connectors

1 new · 2 gone

iPhone 17 Pro	iPhone 18 Pro
Action button features	not on this sheet
Camera controls	not on this sheet
not on this sheet	Built-in microphone

Operating System

1 new · 1 gone

iPhone 17 Pro	iPhone 18 Pro
iOS	not on this sheet
not on this sheet	iOS 27

Accessibility

1 changed · 6 new · 1 gone

iPhone 17 Pro	iPhone 18 Pro
Learn more about Accessibility	Learn more
Features include: VoiceOver Zoom Magnifier Voice Control Switch Control AssistiveTouch Eye Tracking RTT and TTY support Closed Captions Live Captions Personal Voice Live Speech Type to Siri Vocal Shortcuts Spoken Content	not on this sheet
not on this sheet	Assistive Access
not on this sheet	VoiceOver
not on this sheet	Zoom
not on this sheet	Magnifier
not on this sheet	Voice Control
not on this sheet	Switch Control
…and 10 further rows in this section

Built-in Apps

2 gone

iPhone 17 Pro	iPhone 18 Pro
Apple Store	not on this sheet
Clips	not on this sheet

Environmental Requirements

1 changed

iPhone 17 Pro	iPhone 18 Pro
Operating ambient temperature: 32° to 95° F (0° to 35° C)	32° to 95° F (0° to 35° C)

Languages

1 gone

iPhone 17 Pro	iPhone 18 Pro
Language support	not on this sheet

In the Box

1 new · 4 gone

iPhone 17 Pro	iPhone 18 Pro
iPhone 17 Pro	not on this sheet
Documentation	not on this sheet
As part of our efforts to reach carbon neutrality by 2030, iPhone 17 Pro and iPhone 17 Pro Max do not include a power adapter or EarPods. Included in the box is a USB-C Charge Cable that supports fast charging and is compatible with USB-C power adapters and computer ports.	not on this sheet
We encourage you to use any compatible USB-C power adapter. If you need a new Apple power adapter or headphones, they are available for purchase.	not on this sheet
not on this sheet	iPhone with iOS 27

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What this does not tell you

A specification sheet is a claim, not a measurement. Nothing on either page has been verified here, and two figures printed under the same heading are not automatically comparable — a battery figure is quoted against the vendor’s own test, and the test can change between generations without the heading changing. Where a number moved, this note says which document each side came from and stops there.

Who this is for

Someone deciding whether a generation is worth the upgrade, and specifically someone who wants the unchanged list as much as the changed one. A launch page is written to describe what is new; it has no reason to tell you that the display, the sensors and the wireless charging are the same page of text as last year. If the sections you care about are in “What stayed the same”, that is your answer and it took one page rather than a comparison tool.

Sources

• iPhone 18 Pro — Technical Specifications (live product page)
• iPhone 17 Pro — Technical Specifications (archived support page)

Method: both pages were fetched, parsed into headings and values, and compared by heading. Footnote markers are stripped and HTML entities normalised before comparing, because the two pages are served by different systems that spell the same character differently. Per-model columns are read for the iPhone 18 Pro only. No figure was re-measured, and no text was generated from either document — the tables above are the documents.