Between the Poco F7 Ultra and Xiaomi 15, the Poco F7 Ultra comes out ahead in wired charging and screen size, while the Xiaomi 15 wins on weight and pixel density. Overall, the Poco F7 Ultra scores 70.4 and the Xiaomi 15 scores 70 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.4 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 Poco F7 Ultra 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 wired charging, screen size.
Pick the Xiaomi 15 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are weight, pixel density, battery capacity, 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 Xiaomi - Poco F7 Ultra wins
- ▲Wired charging — 33.33% more. 120 W vs 90 W.
- ▲Screen size — 4.87% more. 6.67 " vs 6.36 ".
Why Xiaomi 15 wins
- ▲Weight — 20.00 g less. 192 vs 212.
- ▲Pixel density — 3.14% more. 460 ppi vs 446 ppi.
- ▲Battery capacity — 1.89% more. 5400 mAh vs 5300 mAh.
- ▲AnTuTu — 1.52% more. 2680000 vs 2640000.
Spec comparison
Design
| Spec | Xiaomi - Poco F7 Ultra | Xiaomi 15 |
|---|---|---|
| Weight | 212 g | 192 glead |
| Thickness | 8.4 mm | 8.1 mmlead |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | bar |
Display
| Spec | Xiaomi - Poco F7 Ultra | Xiaomi 15 |
|---|---|---|
| Screen sizeⓘ | 6.67 "lead | 6.36 " |
| Pixel densityⓘ | 446 ppi | 460 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 3200 nits | 3200 nits |
Performance
Cameras
| Spec | Xiaomi - Poco F7 Ultra | Xiaomi 15 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Xiaomi - Poco F7 Ultra | Xiaomi 15 |
|---|---|---|
| Battery capacity | 5300 mAh | 5400 mAhlead |
| Wired chargingⓘ | 120 Wlead | 90 W |
| Wireless chargingⓘ | 50 W | 50 W |
Connectivity
| Spec | Xiaomi - Poco F7 Ultra | Xiaomi 15 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Xiaomi - Poco F7 Ultra | Xiaomi 15 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, Poco F7 Ultra or Xiaomi 15?+
Xiaomi 15 has 1.9% more battery — 5300 mAh vs 5400 mAh.
Which is lighter, Poco F7 Ultra or Xiaomi 15?+
Xiaomi 15 is 20g lighter — 212g vs 192g.
Is Poco F7 Ultra waterproof?+
Poco F7 Ultra has an IP68 rating.
Does Xiaomi 15 support 5G?+
Yes, Xiaomi 15 supports 5G.
Which has a better camera, Poco F7 Ultra or Xiaomi 15?+
Xiaomi 15 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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