iPhone 18 Pro vs Galaxy S25 Ultra
Brand preference aside, the iPhone 18 Pro and the Galaxy S25 Ultra are close competitors, both pitched at flagship smartphone buyers. Where the iPhone 18 Pro shines on performance, the Galaxy S25 Ultra counters on camera.
At a glance
- Display Trade-off
- Performance iPhone 18 Pro wins
- Memory & Storage iPhone 18 Pro wins
- Camera Galaxy S25 Ultra wins
- Battery & Charging iPhone 18 Pro wins
- Price iPhone 18 Pro wins
- Display6.6
- Memory & Storage6.4
- Camera3.2
- Display6.9
- Memory & Storage4.5
- Camera5.5
Spec scores (0 to 10) are calculated from manufacturer specs against other models in the same class. See how the formula works. They are not reviews or user ratings.
Key Differences
-
The Galaxy S25 Ultra has a higher-resolution 200 MP main camera
Put simply, the Galaxy S25 Ultra is far ahead here: 200 MP compared with 48 MP. The Galaxy S25 Ultra’s higher-resolution main sensor gives you more room to crop, which helps when you can’t get closer.
-
The Galaxy S25 Ultra has 5× optical zoom versus 4×
A modest but measurable lead goes to the Galaxy S25 Ultra: 5× compared with 4×. Digital zoom can fake reach, but optical zoom is where the detail actually comes from.
-
The Galaxy S25 Ultra has an extra rear camera
The Galaxy S25 Ultra’s 4 leaves the iPhone 18 Pro’s 3 well behind, so if this spec matters to you, the choice is easy. The count alone doesn’t guarantee quality, but the Galaxy S25 Ultra gives you more lenses to choose from.
-
The Galaxy S25 Ultra has a 0.6-inch larger screen
The Galaxy S25 Ultra goes bigger with 6.9 in; the iPhone 18 Pro keeps it to 6.3 in. Pick the one that matches how you’ll use it. Screen size is personal. If you watch a lot on your phone, the extra area pays off; if you text one-handed on the go, compact is kinder.
-
The iPhone 18 Pro has a bigger top storage option
Not a close call. The iPhone 18 Pro lists 2 TB and the Galaxy S25 Ultra lists 1 TB. That’s a substantial gap. Heavy video shooters and people with large offline libraries benefit from the iPhone 18 Pro’s bigger maximum.
Design & Size
- iPhone 18 Pro 5.91 in × 2.83 in × 0.34 in
- Galaxy S25 Ultra 6.41 in × 3.06 in × 0.32 in
Size-wise, the Galaxy S25 Ultra takes up more space, and the iPhone 18 Pro is easier to fit where room is tight. If weight matters to you, good news: neither is noticeably heavier. Measured edge to edge, the Galaxy S25 Ultra is the thinner one, by 0.02 in.
Design & Build
| Spec | iPhone 18 Pro | Galaxy S25 Ultra |
|---|---|---|
| Height | 5.91 in | 6.41 in |
| Width | 2.83 in | 3.06 in |
| Thickness | 0.34 in | 0.32 in (winner) |
| Weight | 7.44 oz | 7.69 oz |
| Water & dust rating | IP68 | IP68 |
| Frame | Aluminum | Titanium |
Display
Trade-off
Neither has the whole package on display. The iPhone 18 Pro has 15% higher peak brightness, while the Galaxy S25 Ultra has 8.3% sharper pixel density. On display, the better choice comes down to your own priorities.
Screen size
iPhone 18 Pro: 6.3 in Galaxy S25 Ultra: 6.9 in A larger display also means a larger phone overall, so this is as much about your hands and pockets as it is about the picture.
Peak brightness
iPhone 18 Pro: 3,000 nits Galaxy S25 Ultra: 2,600 nits Peak figures are usually reached only in short bursts or small areas of the screen, but a higher ceiling still helps outdoor visibility.
Performance
iPhone 18 Pro leads
The iPhone 18 Pro squeezes out a win in the performance section. Point to the iPhone 18 Pro for a newer 2 nm chip process. A finer process node generally lets a chip do the same work with less power, which can mean cooler running and better battery life. On performance alone, the iPhone 18 Pro gets the nod.
Process node
iPhone 18 Pro: 2 nm Galaxy S25 Ultra: 3 nm The iPhone 18 Pro’s chip is built on a more advanced process. That usually points to efficiency gains, though chip design matters just as much.
CPU cores
iPhone 18 Pro: 6 Galaxy S25 Ultra: 8 Core count on its own says little about speed; how the chip is designed and how fast each core runs matter more.
Memory & Storage
iPhone 18 Pro leads
Slight edge to the iPhone 18 Pro on memory & storage. Most buyers could live happily with either. Here the iPhone 18 Pro offers a bigger top storage option. The top storage option only matters if you plan to buy a high-capacity version, but it caps how much you can ever keep on the phone. If this section decides it for you, choose the iPhone 18 Pro.
Max storage
iPhone 18 Pro: 2 TB Galaxy S25 Ultra: 1 TB Most buyers are fine with a base or middle tier, so this is a niche advantage, but a real one if you need it.
Camera
Galaxy S25 Ultra leads
The Galaxy S25 Ultra wins the camera section decisively. On its side, the Galaxy S25 Ultra has a higher-resolution 200 MP main camera. Megapixels are only one part of image quality, so treat this as a sign of detail potential, not a verdict on photos. The iPhone 18 Pro takes this one with a sharper 18 MP selfie camera. That makes the Galaxy S25 Ultra the natural choice for buyers focused on camera.
Main camera
iPhone 18 Pro: 48 MP Galaxy S25 Ultra: 200 MP More megapixels on the main camera allow bigger crops and more detail in good light, but sensor size and processing matter just as much.
Optical zoom
iPhone 18 Pro: 4× Galaxy S25 Ultra: 5× The Galaxy S25 Ultra reaches further with real optics, which pays off for wildlife, stages and sports from the stands.
Battery & Charging
iPhone 18 Pro leads
A modest lead on battery & charging belongs to the iPhone 18 Pro. The iPhone 18 Pro adds faster 25 W wireless charging. Wireless charging is usually slower than a cable, so this edge matters mainly to people who value the convenience. Anyone shopping mainly on battery & charging should start with the iPhone 18 Pro.
Wireless charging
iPhone 18 Pro: 25 W Galaxy S25 Ultra: 15 W Faster wireless charging makes a pad or stand more practical as your main way to top up.
Software & Updates
The iPhone 18 Pro and the Galaxy S25 Ultra differ on software & updates in ways that are described rather than measured. The table has the details.
Full Specifications
Display
| Spec | iPhone 18 Pro | Galaxy S25 Ultra |
|---|---|---|
| Screen size | 6.3 in | 6.9 in |
| Panel type | OLED, ProMotion 120 Hz (Super Retina XDR) | Dynamic AMOLED 2X |
| Resolution | 2622 x 1206 | 3120 x 1440 |
| Pixel density | 460 ppi | 498 ppi (winner) |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 3,000 nits (winner) | 2,600 nits |
| Always-on display | Yes | Yes |
Performance
| Spec | iPhone 18 Pro | Galaxy S25 Ultra |
|---|---|---|
| Chipset | A20 Pro | Snapdragon 8 Elite for Galaxy |
| CPU cores | 6 | 8 |
| Process node | 2 nm (winner) | 3 nm |
| RAM | N/A (not specified) | 12 GB |
Memory & Storage
| Spec | iPhone 18 Pro | Galaxy S25 Ultra |
|---|---|---|
| Base storage | 256 GB | 256 GB |
| Max storage | 2 TB (winner) | 1 TB |
| microSD slot | No | No |
Camera
| Spec | iPhone 18 Pro | Galaxy S25 Ultra |
|---|---|---|
| Main camera | 48 MP | 200 MP (winner) |
| Ultra-wide camera | 48 MP | 50 MP |
| Telephoto camera | 48 MP | 50 MP |
| Optical zoom | 4× | 5× (winner) |
| Rear cameras | 3 | 4 (winner) |
| Front camera | 18 MP (winner) | 12 MP |
| Max video | 4K120 Dolby Vision | 8K30 |
Battery & Charging
| Spec | iPhone 18 Pro | Galaxy S25 Ultra |
|---|---|---|
| Battery capacity | N/A (not specified) | 5,000 mAh |
| Rated video playbackManufacturer rating | 36 h | N/A (not specified) |
| Wired charging | N/A (not specified) | 45 W |
| Wireless charging | 25 W (winner) | 15 W |
| Port | USB-C (USB 3, 10 Gb/s) | USB-C |
Software & Updates
| Spec | iPhone 18 Pro | Galaxy S25 Ultra |
|---|---|---|
| OS at launch | iOS 27 | Android 15 (One UI 7) |
| Promised OS updatesManufacturer commitment | N/A (not specified) | 7 years |
Design & Build
| Spec | iPhone 18 Pro | Galaxy S25 Ultra |
|---|---|---|
| Height | 5.91 in | 6.41 in |
| Width | 2.83 in | 3.06 in |
| Thickness | 0.34 in | 0.32 in (winner) |
| Weight | 7.44 oz | 7.69 oz |
| Water & dust rating | IP68 | IP68 |
| Frame | Aluminum | Titanium |
Price
| Spec | iPhone 18 Pro | Galaxy S25 Ultra |
|---|---|---|
| Launch price | $1,199 (winner) | $1,300 |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Price & Value
The Galaxy S25 Ultra asked only $101 more at launch. The Galaxy S25 Ultra costs $101 more but doesn’t win everywhere, so the value depends on which strengths you need.
All prices are official US launch prices, last checked September 2026. Actual prices at stores may differ.
Which One Should You Buy?
Choose the iPhone 18 Pro if…
- you need as much on-device space as you can get (2 TB vs 1 TB top option)
- you use a wireless charging pad every day (25 W vs 15 W)
- you care about efficiency under the hood (2 nm vs 3 nm process node)
- you take a lot of selfies or video calls (18 MP vs 12 MP front camera)
- you want the lower price and can live with the trade-offs ($101 less)
Choose the Galaxy S25 Ultra if…
- you want the higher-resolution main camera (200 MP vs 48 MP)
- you shoot concerts, sports or wildlife from a distance (5× vs 4× optical zoom)
- you like switching between focal lengths (4 vs 3 cameras)
- you want the slimmer phone (0.32 in vs 0.34 in)
Also Compared
Frequently Asked Questions
Which is better for most people, the iPhone 18 Pro or the Galaxy S25 Ultra?
There’s no single right answer. The iPhone 18 Pro leads on performance and the Galaxy S25 Ultra on camera.
Which is larger, the iPhone 18 Pro or the Galaxy S25 Ultra?
The Galaxy S25 Ultra is the larger of the two. It measures 6.41 × 3.06 × 0.32 in, compared with 5.91 × 2.83 × 0.34 in for the iPhone 18 Pro.
Does the iPhone 18 Pro perform better than the Galaxy S25 Ultra?
Going by the specs, the iPhone 18 Pro comes out ahead: it offers a newer 2 nm chip process.
Does the iPhone 18 Pro have a stronger camera setup than the Galaxy S25 Ultra?
The Galaxy S25 Ultra leads on camera specs thanks to a higher-resolution 200 MP main camera and 5× optical zoom versus 4×. Processing and personal taste also play a big part in photos.
Is the iPhone 18 Pro cheaper than the Galaxy S25 Ultra?
At launch, the iPhone 18 Pro undercut the Galaxy S25 Ultra by $101. These figures are as of September 2026, and street prices can change.
Which weighs less, the iPhone 18 Pro or the Galaxy S25 Ultra?
Weight won’t decide this one; the iPhone 18 Pro and the Galaxy S25 Ultra are very close.
Executive Summary
Let me cut through the brand noise around the iPhone 18 Pro and the Galaxy S25 Ultra. In daily life, I think the first difference you’d notice is a bigger top storage option, and that goes to the iPhone 18 Pro. I also like that the iPhone 18 Pro brings faster 25 W wireless charging. I don’t want to sell the Galaxy S25 Ultra short, though: it has a higher-resolution 200 MP main camera.
I’d steer performance fans toward the iPhone 18 Pro and camera fans toward the Galaxy S25 Ultra.
My pick: whichever matches your priority, since performance means the iPhone 18 Pro and camera means the Galaxy S25 Ultra.
Personal opinion based on the data above. Your priorities may differ.