Samsung Galaxy S25 Ultra vs Xiaomi 15
The Samsung Galaxy S25 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi 15 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $1299 and $635. By overall MobileRank rating, the Xiaomi 15 leads — 83/100 vs 80/100 (a 3-point difference). Key differences: the Xiaomi 15 has the bigger battery (5240 mAh vs 5000); the main camera is 200 MP vs 50 MP; the Samsung Galaxy S25 Ultra is faster in AnTuTu (3,128,552 vs 3,076,179); per DXOMark lab testing, the Samsung Galaxy S25 Ultra has the stronger camera (151 vs 147); the Xiaomi 15 is noticeably lighter (191g vs 218g).
Profile comparison
Category scores
Samsung Galaxy S25 Ultra
Xiaomi 15
What makes Samsung Galaxy S25 Ultra better?
- Higher AnTuTu: 3128552 vs 3076179
- Better Geekbench Single: 3100 vs 3092
- Better Geekbench Multi: 9760 vs 9147
- Better main camera: 200MP vs 50MP
- Better camera (81/100 vs 78/100)
- Better display (88/100 vs 85/100)
What makes Xiaomi 15 better?
- Bigger battery: 5240 vs 5000 mAh
- Faster charging: 90W vs 45W
- Faster wireless charging: 50W vs 15W
- Lighter: 191g vs 218g
- Cheaper at launch: $635 vs $1299
- Longer battery life (77/100 vs 56/100)
- Better portability (60/100 vs 46/100)
Comparison verdict
Comparing the Samsung Galaxy S25 Ultra vs the Xiaomi 15, the Xiaomi 15 scores 3 points higher (83/100 vs 80/100). In the "battery" category, the Xiaomi 15 leads (77/100 vs 56/100). Value score: Samsung Galaxy S25 Ultra — 70/100, Xiaomi 15 — 80/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, both devices are on the same level — 92/100. In the "display" category, the Samsung Galaxy S25 Ultra and the Xiaomi 15 are nearly equal (88/100 vs 85/100). In the "camera" category, the Samsung Galaxy S25 Ultra and the Xiaomi 15 are nearly equal (81/100 vs 78/100). In the "battery" category, the Xiaomi 15 notably outperforms the Samsung Galaxy S25 Ultra (77/100 vs 56/100). In the "portability" category, the Xiaomi 15 is a bit better (60/100 vs 46/100).
Specs comparison
| Specification | Samsung Galaxy S25 Ultra | Xiaomi 15 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3128552 | 3076179 | |
| Geekbench Single | 3100 | 3092 | |
| Geekbench Multi | 9760 | 9147 | |
| Display | 6.9" Dynamic AMOLED 2X | 6.4" LTPO AMOLED | |
| Resolution | 3120x1440 | 2670x1200 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 5000 mAh | 5240 mAh | |
| Charging | 45W | 90W | |
| Wireless charging | 15W | 50W | |
| DXOMark (camera) | 151 | 147 | |
| Main camera | 200 MP | 50 MP | |
| Ultrawide | 50 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 12 MP | 32 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 15 / One UI 7 | Android 15 / HyperOS 2 | |
| Brightness (peak) | 2600 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 162.8×77.6×8.2 mm | 152.3×71.2×8.4 mm | |
| Weight | 218 g | 191 g | |
| Launch price | $1299 | $635 |
Camera comparison
Samsung Galaxy S25 Ultra
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 12MP
Xiaomi 15
- Main: 50MP f/1.6
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Samsung Galaxy S25 Ultra
- 6.9" Dynamic AMOLED 2X
- Resolution: 3120x1440
- Refresh rate: 120 Hz
Xiaomi 15
- 6.4" LTPO AMOLED
- Resolution: 2670x1200
- Refresh rate: 120 Hz
Battery and charging
Samsung Galaxy S25 Ultra
- 5000 mAh
- NanoReview test: web browsing 11:10 hrs, total 28:43 hrs
- Wired: 45W
- Wireless: 15W
Xiaomi 15
- 5240 mAh
- NanoReview test: web browsing 13:20 hrs, total 31:54 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared Samsung Galaxy S25 Ultra and Xiaomi 15, covering their specs and all relevant benchmarks.
Samsung Galaxy S25 Ultra leads Xiaomi 15 by 1.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $664. Xiaomi 15 was $664 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, both devices are on the same level — 92/100.
display
In the "display" category, the Samsung Galaxy S25 Ultra and the Xiaomi 15 are nearly equal (88/100 vs 85/100).
camera
In the "camera" category, the Samsung Galaxy S25 Ultra and the Xiaomi 15 are nearly equal (81/100 vs 78/100).
battery
In the "battery" category, the Xiaomi 15 notably outperforms the Samsung Galaxy S25 Ultra (77/100 vs 56/100).
portability
In the "portability" category, the Xiaomi 15 is a bit better (60/100 vs 46/100).
Frequently asked questions
Which is better: the Samsung Galaxy S25 Ultra or the Xiaomi 15?
The Xiaomi 15 edges out the Samsung Galaxy S25 Ultra by just 3 points — the two devices are very close in overall level.
What is the rating of the Samsung Galaxy S25 Ultra and the Xiaomi 15?
The Samsung Galaxy S25 Ultra has a MobileRank rating of 80/100, the Xiaomi 15 — 83/100.
Should you choose the Samsung Galaxy S25 Ultra over the Xiaomi 15?
The Samsung Galaxy S25 Ultra is a better fit for gamers and power users, mobile photography enthusiasts. The Xiaomi 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.