iPhone 18 Pro vs iPhone 17 Pro: All the differences explained

By , with contribution from
Orhan Chakarov
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iPhone 18 Pro vs iPhone 17 Pro: All the differences explained
iPhone 18 Pro in the new Burgundy color
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Apple has just unveiled the iPhone 18 Pro, and with all the official information, it's time for an early comparison against last year's iPhone 17 Pro. We will update this article with real world impressions after we test the iPhone 18 Pro in a couple of weeks.

So what's new in the iPhone 18 Pro? The big highlight is the new main camera with variable aperture, better low light photos and videos, much faster chipset, especially for gaming and slightly improved battery life. Oh, and the new model is now $100 more expensive, sadly.

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iPhone 18 Pro vs iPhone 17 Pro differences:



Table of Contents:


Design and Size

No major changes



Last year, the iPhone 17 Pro introduced a new design with the massive camera plateau on the back of the phone and a switch to an aluminum frame, which is better at dissipating heat than titanium. And the iPhone 18 Pro is not changing that, it even has the exact same dimensions as the 17 Pro, so I wouldn't be surprised if your old cases fit on the new model.

What's new is the colors. First, the glass plate on the back now matches the color of the aluminum frame. The signature colors are a sophisticated Burgundy red one and a fresh-looking Glacier blue one. You also get a true deep black colorway, finally, and the usual silver is also in the lineup.

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Display size is unchanged at 6.3 inches, but the iPhone 18 Pro has a smaller Face ID module, so it's less of a distraction when you watch full-screen videos.



Apple has tweaked the software so it can now show you three live activities, instead of two, which is a nice little change.

There were rumors about the Camera Control on the 18 Pro cutting support for gestures, but those turned out fake—the 18 Pro has the exact same Camera Control as previous iPhones.

Display Differences




The iPhone 16 Pro and 17 Pro featured a 6.3 inch screen (up from 6.1 inches on the 15 Pro series), and with super slim borders around that screen, there is not much room for further improvement before the phone becomes bigger. So the iPhone 18 Pro has the same 6.3-inch screen size with the same support for ProMotion of up to 120Hz. 

Display Measurements:



Early rumors suggested Apple would use a new panel and give users higher brightness, but that has not happened. The iPhone 18 Pro hits the same 3,000 nits of peak brightness as the 17 Pro and can go down to a comfortably low 1 nit at night.


Performance and Software

Faster and with more AI



The iPhone 18 Pro features the new Apple A20 Pro chip, but with no change in RAM (12GB on all models) or storage configurations (256GB base model, 512GB, 1TB and 2TB options).

The new A20 Pro chip is particularly exciting because it's a jump in technology generations. It uses TSMC's 2nm node, a jump over the 3nm used for previous iPhones.

A new 6-core CPU (with 2 large super cores and 4 efficiency cores) is now 20% faster, and Apple claims it's the fastest of any smartphone.

CPU Performance Benchmarks:


Geekbench 7
Single Higher is better
Apple iPhone 18 Pro4030
Apple iPhone 17 Pro3225
Geekbench 7
MultiHigher is better
Apple iPhone 18 Pro11311
Apple iPhone 17 Pro8881

AI-QuantizedHigher is better
Apple iPhone 17 Pro6602

AI Quantized: This test measures how efficiently your phone's 'brain' handles AI tasks, ensuring that features like live translation and smart photo editing feel instant and fluid without draining your battery.



GPU Performance


3DMark Extreme(High)Higher is better
Apple iPhone 18 Pro8189
Apple iPhone 17 Pro5914
3DMark Extreme(Low)Higher is better
Apple iPhone 18 Pro4672
Apple iPhone 17 Pro3506

Wild Life Extreme is a heavy graphics workload used to measure a device's sustained GPU performance and thermal throttling. It uses older mobile rendering techniques and is friendly to older or lower-end mobile devices.


3DMark Steel Nomad Light(High)Higher is better
Apple iPhone 18 Pro3945
Apple iPhone 17 Pro2592
3DMark Steel Nomad Light(Low)Higher is better
Apple iPhone 18 Pro2307
Apple iPhone 17 Pro1584

Steel Nomad Light Stress Test: Measures your phone's 'gaming stamina' by comparing its peak speed (High) against its throttled speed after it heats up (Low), revealing whether your performance will stay smooth or start lagging during a long session. It loads heavier, more modern effects than Wild Life Extreme and is more in line with current games.


3DMark Solar Bay Extreme(High)Higher is better
Apple iPhone 18 Pro3052
Apple iPhone 17 Pro2087
3DMark Solar Bay Extreme(Low)Higher is better
Apple iPhone 18 Pro1497
Apple iPhone 17 Pro1048

Ray Tracing: The test measures Ray Tracing performance because this advanced technology creates the hyper-realistic reflections and shadows found in next-gen titles like Arena Breakout. Even if you don't play games with ray tracing, a high score here means your phone has a 'best-in-class' cooling system.


But the big leap happens in GPU. You now have a 7-core GPU with a whopping 40% jump in graphics performance in just a year. That is massive, especially for those who like playing heavy games like Genshin Impact on an iPhone.

With a bigger area for the vapor chamber, cooling has also improved, and the 18 Pro can sustain its high performance in gaming longer. 

Random Read(MB/s)Higher is better
Apple iPhone 17 Pro46.89
Random Write(MB/s)Higher is better
Apple iPhone 17 Pro32.99
Sequential Read(MB/s)Higher is better
Apple iPhone 17 Pro1667
Sequential Write(MB/s)Higher is better
Apple iPhone 17 Pro1519

Storage tests measure how quickly your phone can move data. Random read and write show how fast your phone can find and move thousands of tiny, scattered files. This is the most important metric for an average user because it's what happens when you open an app, check your notifications, or search through your photo gallery. Sequential read and write measure the speed of moving one giant, continuous file. You'll notice this when you are saving a 4K video you just recorded or downloading a massive game update.




The iPhone 18 Pro arrives with the new iOS 27 software, of course, but that is also coming to many previously released iPhones too, including the 17 Pro.

Just a reminder here that not all iOS 27 features will arrive equally to all iPhones. The new Siri powered by AI and the rest of the Apple Intelligence features are only supported by iPhone 15 Pro and Pro Max, as well as iPhone 16 and later. iPhones with 6GB or less, such as the iPhone 15 or iPhone 14 Pro series, do not support those features.


We have a deep dive into all the new iOS 27 features here, so check that out to get the full software picture.

Camera

Variable aperture


Photo
Video
Phone Camera
Score
Photo
Score
Main
(wide)
Ultra
Wide
Selfie Zoom
Apple iPhone 18 Pro 156 162 85 24 28 26
Apple iPhone 17 Pro 156 162 84 24 28 26
Phone Camera
Score
Video
Score
Main
(wide)
Ultra
Wide
Selfie Zoom
Apple iPhone 18 Pro 156 150 77 23 26 24
Apple iPhone 17 Pro 156 150 77 23 26 24
Find out more details about photo and video scores for all phones we have tested on our PhoneArena Camera Score page

The big camera plateau does not change on the iPhone 18 Pro, but the camera you use the most gets a big upgrade this year.

First, let's make it clear - the iPhone 18 Pro has three cameras on its back, a main one, an ultra-wide one and a 4X telephoto one — same configuration as the 17 Pro.

The ultra-wide and telephoto ones are expected to remain unchanged in terms of hardware, only the main one is getting an upgrade.

The iPhone 18 Pro is the first iPhone to use variable aperture, while previous iPhones have all used fixed apertures (the iPhone 17 Pro has f/1.78 aperture). A variable aperture means you can manually control how much light hits the lens. A wider aperture results in more light and more blurred backgrounds, while a narrower aperture does the opposite. The mechanical aperture in the iPhone 18 Pro is adjusted automatically, but you can use the new manual Pro mode if you like and go as low as f/1.48 and up to f/4.0.

Apple is also bringing new Photographic Styles, version 3, with added support for grain and texture control. This allows you to get more creative, filmic, grainy looks to your images, and I'm all for it.

Video quality in low light also improves with the wider aperture main camera, which is great.

Apple will also now allow you to add a Cinematic effect (blurring the backgroun) to an existing video captured with the regular video mode.
 

Battery Life and Charging

Small changes in size, but software might make a bigger difference


Battery Life
Charging
Phone Battery Life
estimate
Browsing Video Gaming
Apple iPhone 18 Pro
4288 mAh
7h 53min 22h 51min 8h 14min 11h 53min
Apple iPhone 17 Pro
4252 mAh
6h 42min 17h 6min 8h 25min 10h 8min
Phone Full Charging 30 min Charge
Wired Wireless Wired Wireless
Apple iPhone 18 Pro
4288 mAh
1h 4min Untested 73% Untested
Apple iPhone 17 Pro
4252 mAh
1h 16min 2h 20min 67% 27%
Find out more details about battery and charging for all phones we have tested on our PhoneArena Battery Score page

While the iPhone 18 Pro Max brings a big change in battery size, the smaller 18 Pro model is not such a huge leap forward. Apple does not disclose battery specifics, but leaks gave out the battery numbers, and we once again have two slightly different battery sizes based on the region and eSIM/physical SIM support.

The iPhone 18 Pro has recently passed certification with the Chinese agency 3C and the listing confirms a 4,056mAh battery in the Global model with physical SIM card and a 4,288mAh battery in the US model with eSIM. That is a minuscule 2% improvement over the iPhone 17 Pro, which features a 3,988mAh (global) / 4,252mAh (US model).

As always, though, it's not just about the physical size of the battery. Apple's official number say we now get 36 hours of video streaming on the 18 Pro, a nearly 10% increase over the 33 hours on the 17 Pro. Not bad.

Charging speeds are surprisingly a bit faster too, with added support for 60W chargers, while the previous generation maxed out at 40 watts. That means the iPhone 18 Pro gets 50% charge in just 15 minutes with a compatible charger.

Specs Comparison


And here is a look at the iPhone 18 Pro vs iPhone 17 Pro specs:

Apple iPhone 18 Pro Apple iPhone 17 Pro
Design
Dimensions
150 x 71.9 x 8.75 mm (~13.49 mm with camera bump) 150.0 x 71.9 x 8.75 mm (~13.13 mm with camera bump)
Weight
211.0 g 206.0 g
Display
Size
6.3-inch 6.3-inch
Type
OLED, Variable 1-120Hz OLED, Variable 1-120Hz
Hardware
System chip
Apple A20 Pro (2 nm) Apple A19 Pro (3 nm)
Memory
12GB (LPDDR5X)/256GB
12GB/512GB
12GB/1TB
12GB/2TB
12GB (LPDDR5)/256GB
12GB/512GB
12GB/1TB
OS
iOS (27.x) iOS (26.x)
Battery
Type
4288 mAh 4252 mAh
Charge speed
Wired: 60.0W
Wireless: 25.0W
Wired: 40.0W
Wireless: 25.0W
Camera
Main camera
48 MP (PDAF, ToF 3D depth sensing, Sensor-shift OIS)
Sensor name: Sony IMX905
Aperture size: F1.5/F4.0
Focal length: 24 mm
Sensor size: 1/1.28"
Pixel size: 1.22 μm
48 MP (Sensor-shift OIS, PDAF)
Aperture size: F1.8
Focal length: 24 mm
Sensor size: 1/1.28"
Pixel size: 1.22 μm
Second camera
48 MP (Ultra-wide, Sensor-shift OIS)
Sensor name: Sony IMX972
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 0.7 μm
48 MP (Ultra-wide, Sensor-shift OIS)
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 0.7 μm
Third camera
48 MP (Telephoto, Periscope, OIS, PDAF)
Sensor name: Sony IMX973
Optical zoom: 4.0x
Aperture size: F2.8
Focal Length: 100 mm
Sensor size: 1/2.55"
Pixel size: 0.7 μm
48 MP (Telephoto, OIS, PDAF)
Optical zoom: 4.0x
Aperture size: F2.8
Focal Length: 100 mm
Sensor size: 1/2.55"
Pixel size: 0.7 μm
Front
18 MP (Time-of-Flight (ToF), Autofocus, HDR) 18 MP (Time-of-Flight (ToF), Autofocus, HDR)
See the full Apple iPhone 18 Pro vs Apple iPhone 17 Pro specs comparison or compare them to other phones using our Phone Comparison tool

Summary


If you already own the iPhone 17 Pro, this is well, an upgrade, but not a particularly huge one. 

As usual, Apple has focused most upgrades around the new camera, with better low-light performance, full manual control, and improvements to video. The new processor is also nice for gamers, but serious gaming is still mostly done on devices other than phones. You also get slight improvements in battery life (modest in these smaller Pro models) and charging speeds.

I should say that next year, in 2027, we expect to see the 20th anniversary iPhone, which is rumored to come with a bigger redesign and more groundbreaking new technology, so you might want to wait it out too.

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