Redmi 15 vs Samsung Galaxy S25 Ultra
The Redmi 15 (2025) runs on the Qualcomm Snapdragon 685, while the Samsung Galaxy S25 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $180 and $1299. By overall MobileRank rating, the Samsung Galaxy S25 Ultra leads — 80/100 vs 43/100 (a 37-point difference). Key differences: the Redmi 15 has the bigger battery (7000 mAh vs 5000); the main camera is 50 MP vs 200 MP; the Samsung Galaxy S25 Ultra is faster in AnTuTu (3,128,552 vs 476,175).
Profile comparison
Category scores
Redmi 15
Samsung Galaxy S25 Ultra
What makes Redmi 15 better?
- Bigger battery: 7000 vs 5000 mAh
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 214g vs 218g
- Cheaper at launch: $180 vs $1299
- Longer battery life (58/100 vs 56/100)
What makes Samsung Galaxy S25 Ultra better?
- Higher AnTuTu: 3128552 vs 476175
- Better Geekbench Single: 3100 vs 466
- Better Geekbench Multi: 9760 vs 1396
- Faster charging: 45W vs 33W
- Better main camera: 200MP vs 50MP
- Higher performance (92/100 vs 34/100)
- Better camera (81/100 vs 30/100)
- Better display (88/100 vs 74/100)
Comparison verdict
Comparing the Redmi 15 vs the Samsung Galaxy S25 Ultra, the Samsung Galaxy S25 Ultra scores 37 points higher (80/100 vs 43/100). In the "performance" category, the Samsung Galaxy S25 Ultra leads (92/100 vs 34/100). In the "camera" category, the Samsung Galaxy S25 Ultra leads (81/100 vs 30/100). Value score: Redmi 15 — 52/100, Samsung Galaxy S25 Ultra — 70/100; 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, the Samsung Galaxy S25 Ultra significantly outperforms the Redmi 15 (92/100 vs 34/100). In the "display" category, the Samsung Galaxy S25 Ultra is a bit better (88/100 vs 74/100). In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Redmi 15 (81/100 vs 30/100). In the "battery" category, the Redmi 15 and the Samsung Galaxy S25 Ultra are nearly equal (58/100 vs 56/100). In the "portability" category, both devices are on the same level — 46/100.
Specs comparison
| Specification | Redmi 15 | Samsung Galaxy S25 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 685 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 476175 | 3128552 | |
| Geekbench Single | 466 | 3100 | |
| Geekbench Multi | 1396 | 9760 | |
| Display | 6.9" IPS LCD | 6.9" Dynamic AMOLED 2X | |
| Resolution | 2340x1080 | 3120x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7000 mAh | 5000 mAh | |
| Charging | 33W | 45W | |
| Wireless charging | 0W | 15W | |
| DXOMark (camera) | — | 151 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 8 MP | 12 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Xiaomi HyperOS 2 | Android 15 / One UI 7 | |
| Brightness (peak) | 850 nits | 2600 nits | |
| NFC | yes | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | 169.5×80.5×8.4 mm | 162.8×77.6×8.2 mm | |
| Weight | 214 g | 218 g | |
| Launch price | $180 | $1299 |
Camera comparison
Redmi 15
- Main: 50MP f/1.8
- Front: 8MP
Samsung Galaxy S25 Ultra
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 12MP
Display comparison
Redmi 15
- 6.9" IPS LCD
- Resolution: 2340x1080
- Refresh rate: 144 Hz
Samsung Galaxy S25 Ultra
- 6.9" Dynamic AMOLED 2X
- Resolution: 3120x1440
- Refresh rate: 120 Hz
Battery and charging
Redmi 15
- 7000 mAh
- Wired: 33W
- No wireless charging
Samsung Galaxy S25 Ultra
- 5000 mAh
- NanoReview test: web browsing 11:10 hrs, total 28:43 hrs
- Wired: 45W
- Wireless: 15W
Overall performance score
We compared Redmi 15 and Samsung Galaxy S25 Ultra, covering their specs and all relevant benchmarks.
Samsung Galaxy S25 Ultra leads Redmi 15 by 84.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $1119. Redmi 15 was $1119 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Samsung Galaxy S25 Ultra significantly outperforms the Redmi 15 (92/100 vs 34/100).
display
In the "display" category, the Samsung Galaxy S25 Ultra is a bit better (88/100 vs 74/100).
camera
In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Redmi 15 (81/100 vs 30/100).
battery
In the "battery" category, the Redmi 15 and the Samsung Galaxy S25 Ultra are nearly equal (58/100 vs 56/100).
portability
In the "portability" category, both devices are on the same level — 46/100.
Frequently asked questions
Which is better: the Redmi 15 or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra significantly outperforms the Redmi 15 by 37 points (80/100 vs 43/100).
What is the rating of the Redmi 15 and the Samsung Galaxy S25 Ultra?
The Redmi 15 has a MobileRank rating of 43/100, the Samsung Galaxy S25 Ultra — 80/100.
Which has the better camera: the Redmi 15 or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra leads on camera score (81/100 vs 30/100).
Which is more powerful: the Redmi 15 or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra leads on performance (92/100 vs 34/100).
Should you choose the Redmi 15 over the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra is a better fit for gamers and power users, mobile photography enthusiasts.