Between the Galaxy S25 Ultra and OnePlus 12, the Galaxy S25 Ultra comes out ahead in main camera and antutu, while the OnePlus 12 wins on wireless charging and front camera. Overall, the Galaxy S25 Ultra scores 73.9 and the OnePlus 12 scores 69.6 on our Mars Score.
Which should you buy?
The Galaxy S25 Ultra edges ahead on the Mars Score (73.9 vs 69.6), but the 4.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Galaxy S25 Ultra if you photograph or shoot video regularly and want the better imaging pipeline of the two. The biggest gaps in its favor are main camera, antutu, weight, among others.
Pick the OnePlus 12 if you photograph or shoot video regularly and want the better imaging pipeline of the two. Its strongest claims are wireless charging, front camera, wired charging, among others.
Both ship with comparable ram, refresh rate, 5g support, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Samsung - Galaxy S25 Ultra wins
- ▲Main camera — 300.00% more. 200 MP vs 50 MP.
- ▲AnTuTu — 4.37% more. 2150000 vs 2060000.
- ▲Weight — 2.00 g less. 218 vs 220.
- ▲Screen size — 1.17% more. 6.9 " vs 6.82 ".
- ▲Water resistance: IP68 (vs IP65).
- ▲Promised OS updates: 7 (vs 4).
Why OnePlus 12 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲Front camera — 166.67% more. 32 MP vs 12 MP.
- ▲Wired charging — 122.22% more. 100 W vs 45 W.
- ▲Battery capacity — 8.00% more. 5400 mAh vs 5000 mAh.
- ▲Pixel density — 1.80% more. 510 ppi vs 501 ppi.
Spec comparison
Design
| Spec | Samsung - Galaxy S25 Ultra | OnePlus 12 |
|---|---|---|
| Weight | 218 glead | 220 g |
| Thickness | 8.2 mmlead | 9.15 mm |
| Water resistanceⓘ | IP68lead | IP65 |
| Form factor | bar | bar |
Display
| Spec | Samsung - Galaxy S25 Ultra | OnePlus 12 |
|---|---|---|
| Screen sizeⓘ | 6.9 "lead | 6.82 " |
| Pixel densityⓘ | 501 ppi | 510 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2600 nits | 4500 nitslead |
Performance
Cameras
| Spec | Samsung - Galaxy S25 Ultra | OnePlus 12 |
|---|---|---|
| Main cameraⓘ | 200 MPlead | 50 MP |
| Front camera | 12 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Samsung - Galaxy S25 Ultra | OnePlus 12 |
|---|---|---|
| Battery capacity | 5000 mAh | 5400 mAhlead |
| Wired chargingⓘ | 45 W | 100 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Samsung - Galaxy S25 Ultra | OnePlus 12 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Samsung - Galaxy S25 Ultra | OnePlus 12 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 yearslead | 4 years |
Frequently asked
Which has better battery, Galaxy S25 Ultra or OnePlus 12?+
OnePlus 12 has 8.0% more battery — 5000 mAh vs 5400 mAh.
Which is lighter, Galaxy S25 Ultra or OnePlus 12?+
Galaxy S25 Ultra is 2g lighter — 218g vs 220g.
Is Galaxy S25 Ultra waterproof?+
Galaxy S25 Ultra has an IP68 rating.
Does OnePlus 12 support 5G?+
Yes, OnePlus 12 supports 5G.
Which has a better camera, Galaxy S25 Ultra or OnePlus 12?+
Galaxy S25 Ultra has a 200 MP main camera vs 50 MP.
Spec-level deep dives
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