Between the iPhone 17 Pro Max and Xiaomi 15, the iPhone 17 Pro Max comes out ahead in screen size and promised os updates, while the Xiaomi 15 wins on wired charging and front camera. Overall, the iPhone 17 Pro Max scores 67.5 and the Xiaomi 15 scores 70 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (67.5 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 iPhone 17 Pro Max 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 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 wired charging, front camera, wireless 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 Apple - iPhone 17 Pro Max wins
- ▲Screen size — 8.49% more. 6.9 " vs 6.36 ".
- ▲Promised OS updates: 6 (vs 4).
Why Xiaomi 15 wins
- ▲Wired charging — 200.00% more. 90 W vs 30 W.
- ▲Front camera — 166.67% more. 32 MP vs 12 MP.
- ▲Wireless charging — 100.00% more. 50 W vs 25 W.
- ▲Weight — 35.00 g less. 192 vs 227.
- ▲AnTuTu — 27.62% more. 2680000 vs 2100000.
- ▲Battery capacity — 15.26% more. 5400 mAh vs 4685 mAh.
- ▲Main camera — 4.17% more. 50 MP vs 48 MP.
Spec comparison
Design
| Spec | Apple - iPhone 17 Pro Max | Xiaomi 15 |
|---|---|---|
| Weight | 227 g | 192 glead |
| Thickness | 8.3 mm | 8.1 mmlead |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | bar |
Display
| Spec | Apple - iPhone 17 Pro Max | Xiaomi 15 |
|---|---|---|
| Screen sizeⓘ | 6.9 "lead | 6.36 " |
| Pixel densityⓘ | 460 ppi | 460 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2200 nits | 3200 nitslead |
Performance
Cameras
| Spec | Apple - iPhone 17 Pro Max | Xiaomi 15 |
|---|---|---|
| Main cameraⓘ | 48 MP | 50 MPlead |
| Front camera | 12 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Apple - iPhone 17 Pro Max | Xiaomi 15 |
|---|---|---|
| Battery capacity | 4685 mAh | 5400 mAhlead |
| Wired chargingⓘ | 30 W | 90 Wlead |
| Wireless chargingⓘ | 25 W | 50 Wlead |
Connectivity
| Spec | Apple - iPhone 17 Pro Max | Xiaomi 15 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Apple - iPhone 17 Pro Max | Xiaomi 15 |
|---|---|---|
| OS | iOSlead | Android |
| Promised OS updates | 6 yearslead | 4 years |
Frequently asked
Which has better battery, iPhone 17 Pro Max or Xiaomi 15?+
Xiaomi 15 has 15.3% more battery — 4685 mAh vs 5400 mAh.
Which is lighter, iPhone 17 Pro Max or Xiaomi 15?+
Xiaomi 15 is 35g lighter — 227g vs 192g.
Is iPhone 17 Pro Max waterproof?+
iPhone 17 Pro Max has an IP68 rating.
Does Xiaomi 15 support 5G?+
Yes, Xiaomi 15 supports 5G.
Which has a better camera, iPhone 17 Pro Max or Xiaomi 15?+
Xiaomi 15 has a 50 MP main camera vs 48 MP.
Spec-level deep dives
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