Between the Galaxy S25 Ultra and Galaxy S26, the Galaxy S25 Ultra comes out ahead in main camera and battery capacity, while the Galaxy S26 wins on weight. Overall, the Galaxy S25 Ultra scores 73.9 and the Galaxy S26 scores 64.6 on our Mars Score.
Which should you buy?
The Galaxy S25 Ultra is the clear pick on raw spec strength, leading by 9.3 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Galaxy S25 Ultra if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. The biggest gaps in its favor are main camera, battery capacity, pixel density, among others.
Pick the Galaxy S26 if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight.
Both ship with comparable ram, refresh rate, 5g support, so those specs don't separate the two — focus on the differences below.
Bottom line: the Galaxy S25 Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Samsung - Galaxy S25 Ultra wins
- ▲Main camera — 300.00% more. 200 MP vs 50 MP.
- ▲Battery capacity — 25.00% more. 5000 mAh vs 4000 mAh.
- ▲Pixel density — 17.88% more. 501 ppi vs 425 ppi.
- ▲Screen size — 11.29% more. 6.9 " vs 6.2 ".
Why Samsung - Galaxy S26 wins
- ▲Weight — 50.00 g less. 168 vs 218.
Spec comparison
Design
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 |
|---|---|---|
| Weight | 218 g | 168 glead |
| Thickness | 8.2 mm | 7.4 mmlead |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | bar |
Display
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 |
|---|---|---|
| Screen sizeⓘ | 6.9 "lead | 6.2 " |
| Pixel densityⓘ | 501 ppilead | 425 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2600 nitslead | 2400 nits |
Performance
Cameras
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 |
|---|---|---|
| Main cameraⓘ | 200 MPlead | 50 MP |
| Front camera | 12 MP | 12 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 |
|---|---|---|
| Battery capacity | 5000 mAhlead | 4000 mAh |
| Wired chargingⓘ | 45 W | 45 W |
| Wireless chargingⓘ | 15 W | 15 W |
Connectivity
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Samsung - Galaxy S25 Ultra | Samsung - Galaxy S26 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 years | 7 years |
Frequently asked
Which has better battery, Galaxy S25 Ultra or Galaxy S26?+
Galaxy S25 Ultra has 25.0% more battery — 5000 mAh vs 4000 mAh.
Which is lighter, Galaxy S25 Ultra or Galaxy S26?+
Galaxy S26 is 50g lighter — 218g vs 168g.
Is Galaxy S25 Ultra waterproof?+
Galaxy S25 Ultra has an IP68 rating.
Does Galaxy S26 support 5G?+
Yes, Galaxy S26 supports 5G.
Which has a better camera, Galaxy S25 Ultra or Galaxy S26?+
Galaxy S25 Ultra has a 200 MP main camera vs 50 MP.
Spec-level deep dives
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