Between the Galaxy S26+ and Xiaomi 15, the Galaxy S26+ comes out ahead in pixel density and screen size, while the Xiaomi 15 wins on wireless charging and front camera. Overall, the Galaxy S26+ scores 68.5 and the Xiaomi 15 scores 70 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (68.5 vs 70). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Galaxy S26+ if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are pixel density, screen size, promised os updates.
Pick the Xiaomi 15 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, main camera, refresh rate, 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 S26+ wins
- ▲Pixel density — 11.52% more. 513 ppi vs 460 ppi.
- ▲Screen size — 5.35% more. 6.7 " vs 6.36 ".
- ▲Promised OS updates: 7 (vs 4).
Why Xiaomi 15 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲Front camera — 166.67% more. 32 MP vs 12 MP.
- ▲Wired charging — 100.00% more. 90 W vs 45 W.
- ▲AnTuTu — 21.82% more. 2680000 vs 2200000.
- ▲Battery capacity — 10.20% more. 5400 mAh vs 4900 mAh.
- ▲Weight — 4.00 g less. 192 vs 196.
Spec comparison
Design
| Spec | Samsung - Galaxy S26+ | Xiaomi 15 |
|---|---|---|
| Weight | 196 g | 192 glead |
| Thickness | 7.6 mmlead | 8.1 mm |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | bar |
Display
| Spec | Samsung - Galaxy S26+ | Xiaomi 15 |
|---|---|---|
| Screen sizeⓘ | 6.7 "lead | 6.36 " |
| Pixel densityⓘ | 513 ppilead | 460 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2600 nits | 3200 nitslead |
Performance
Cameras
| Spec | Samsung - Galaxy S26+ | Xiaomi 15 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 12 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Samsung - Galaxy S26+ | Xiaomi 15 |
|---|---|---|
| Battery capacity | 4900 mAh | 5400 mAhlead |
| Wired chargingⓘ | 45 W | 90 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Samsung - Galaxy S26+ | Xiaomi 15 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Samsung - Galaxy S26+ | Xiaomi 15 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 yearslead | 4 years |
Frequently asked
Which has better battery, Galaxy S26+ or Xiaomi 15?+
Xiaomi 15 has 10.2% more battery — 4900 mAh vs 5400 mAh.
Which is lighter, Galaxy S26+ or Xiaomi 15?+
Xiaomi 15 is 4g lighter — 196g vs 192g.
Is Galaxy S26+ waterproof?+
Galaxy S26+ has an IP68 rating.
Does Xiaomi 15 support 5G?+
Yes, Xiaomi 15 supports 5G.
Which has a better camera, Galaxy S26+ or Xiaomi 15?+
Xiaomi 15 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.