Samsung - Galaxy S25 Ultra vs Samsung - Galaxy S26 Ultra
Between the Galaxy S25 Ultra and Galaxy S26 Ultra, the Galaxy S25 Ultra comes out ahead in weight, while the Galaxy S26 Ultra wins on wired charging and ram. Overall, the Galaxy S25 Ultra scores 73.9 and the Galaxy S26 Ultra scores 75.6 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (73.9 vs 75.6). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Galaxy S25 Ultra if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight.
Pick the Galaxy S26 Ultra if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are wired charging, ram, antutu.
Both ship with comparable battery capacity, main camera, screen size, 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
- ▲Weight — 14.00 g less. 218 vs 232.
Why Samsung - Galaxy S26 Ultra wins
- ▲Wired charging — 44.44% more. 65 W vs 45 W.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲AnTuTu — 7.44% more. 2310000 vs 2150000.
Spec comparison
Design
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 Ultra |
|---|---|---|
| Weight | 218 glead | 232 g |
| Thickness | 8.2 mmlead | 8.6 mm |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | bar |
Display
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 Ultra |
|---|---|---|
| Screen sizeⓘ | 6.9 " | 6.9 " |
| Pixel densityⓘ | 501 ppi | 501 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2600 nits | 2600 nits |
Performance
Cameras
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 Ultra |
|---|---|---|
| Main cameraⓘ | 200 MP | 200 MP |
| Front camera | 12 MP | 12 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 Ultra |
|---|---|---|
| Battery capacity | 5000 mAh | 5000 mAh |
| Wired chargingⓘ | 45 W | 65 Wlead |
| Wireless chargingⓘ | 15 W | 15 W |
Connectivity
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 Ultra |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 Ultra |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 years | 7 years |
Frequently asked
Which has better battery, Galaxy S25 Ultra or Galaxy S26 Ultra?+
Galaxy S26 Ultra has 0.0% more battery — 5000 mAh vs 5000 mAh.
Which is lighter, Galaxy S25 Ultra or Galaxy S26 Ultra?+
Galaxy S25 Ultra is 14g lighter — 218g vs 232g.
Is Galaxy S25 Ultra waterproof?+
Galaxy S25 Ultra has an IP68 rating.
Does Galaxy S26 Ultra support 5G?+
Yes, Galaxy S26 Ultra supports 5G.
Which has more RAM, Galaxy S25 Ultra or Galaxy S26 Ultra?+
Galaxy S26 Ultra offers 16GB of RAM.
Which has a better camera, Galaxy S25 Ultra or Galaxy S26 Ultra?+
Galaxy S26 Ultra has a 200 MP main camera vs 200 MP.
Spec-level deep dives
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