ASUS - Zenfone 11 Ultra vs Samsung - Galaxy S25 Ultra
Between the Zenfone 11 Ultra and Galaxy S25 Ultra, the Zenfone 11 Ultra comes out ahead in front camera and wired charging, while the Galaxy S25 Ultra wins on main camera and pixel density. Overall, the Zenfone 11 Ultra scores 71.9 and the Galaxy S25 Ultra scores 73.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (71.9 vs 73.9). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Zenfone 11 Ultra if you photograph or shoot video regularly and want the better imaging pipeline of the two. The biggest gaps in its favor are front camera, wired charging, ram, among others.
Pick the Galaxy S25 Ultra if you photograph or shoot video regularly and want the better imaging pipeline of the two. Its strongest claims are main camera, pixel density, weight, among others.
Both ship with comparable 5g support, water resistance, optical image stabilization, 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 ASUS - Zenfone 11 Ultra wins
- ▲Front camera — 166.67% more. 32 MP vs 12 MP.
- ▲Wired charging — 44.44% more. 65 W vs 45 W.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲Battery capacity — 10.00% more. 5500 mAh vs 5000 mAh.
Why Samsung - Galaxy S25 Ultra wins
- ▲Main camera — 300.00% more. 200 MP vs 50 MP.
- ▲Pixel density — 29.12% more. 501 ppi vs 388 ppi.
- ▲Weight — 6.00 g less. 218 vs 224.
- ▲AnTuTu — 3.86% more. 2150000 vs 2070000.
- ▲Screen size — 1.77% more. 6.9 " vs 6.78 ".
- ▲Promised OS updates: 7 (vs 2).
Spec comparison
Design
| Spec | ASUS - Zenfone 11 Ultra | Samsung - Galaxy S25 Ultra |
|---|---|---|
| Weight | 224 g | 218 glead |
| Thickness | 8.9 mm | 8.2 mmlead |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | bar |
Display
| Spec | ASUS - Zenfone 11 Ultra | Samsung - Galaxy S25 Ultra |
|---|---|---|
| Screen sizeⓘ | 6.78 " | 6.9 "lead |
| Pixel densityⓘ | 388 ppi | 501 ppilead |
| Refresh rateⓘ | 144 Hzlead | 120 Hz |
| Peak brightnessⓘ | 2500 nits | 2600 nitslead |
Performance
Cameras
| Spec | ASUS - Zenfone 11 Ultra | Samsung - Galaxy S25 Ultra |
|---|---|---|
| Main cameraⓘ | 50 MP | 200 MPlead |
| Front camera | 32 MPlead | 12 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | ASUS - Zenfone 11 Ultra | Samsung - Galaxy S25 Ultra |
|---|---|---|
| Battery capacity | 5500 mAhlead | 5000 mAh |
| Wired chargingⓘ | 65 Wlead | 45 W |
| Wireless chargingⓘ | 15 W | 15 W |
Connectivity
| Spec | ASUS - Zenfone 11 Ultra | Samsung - Galaxy S25 Ultra |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | ASUS - Zenfone 11 Ultra | Samsung - Galaxy S25 Ultra |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 2 years | 7 yearslead |
Frequently asked
Which has better battery, Zenfone 11 Ultra or Galaxy S25 Ultra?+
Zenfone 11 Ultra has 10.0% more battery — 5500 mAh vs 5000 mAh.
Which is lighter, Zenfone 11 Ultra or Galaxy S25 Ultra?+
Galaxy S25 Ultra is 6g lighter — 224g vs 218g.
Is Zenfone 11 Ultra waterproof?+
Zenfone 11 Ultra has an IP68 rating.
Does Galaxy S25 Ultra support 5G?+
Yes, Galaxy S25 Ultra supports 5G.
Which has more RAM, Zenfone 11 Ultra or Galaxy S25 Ultra?+
Zenfone 11 Ultra offers 16GB of RAM.
Which has a better camera, Zenfone 11 Ultra or Galaxy S25 Ultra?+
Galaxy S25 Ultra has a 200 MP main camera vs 50 MP.
Spec-level deep dives
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