Redmi K100 vs Samsung Galaxy S25 Ultra
The Redmi K100 (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy S25 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Samsung Galaxy S25 Ultra leads — 80/100 vs 73/100 (a 7-point difference). Key differences: the Redmi K100 has the bigger battery (10000 mAh vs 5000); the main camera is 50 MP vs 200 MP; the Redmi K100 is faster in AnTuTu (3,298,726 vs 3,128,552); the Samsung Galaxy S25 Ultra is noticeably lighter (218g vs 234g).
Profile comparison
Category scores
Redmi K100
Samsung Galaxy S25 Ultra
What makes Redmi K100 better?
- Higher AnTuTu: 3298726 vs 3128552
- Bigger battery: 10000 vs 5000 mAh
- Faster charging: 100W vs 45W
- Higher refresh rate: 165Hz vs 120Hz
- Longer battery life (80/100 vs 56/100)
- Better display (94/100 vs 88/100)
What makes Samsung Galaxy S25 Ultra better?
- Better Geekbench Single: 3100 vs 3013
- Better Geekbench Multi: 9760 vs 9287
- Better main camera: 200MP vs 50MP
- Lighter: 218g vs 234g
- Better camera (81/100 vs 37/100)
- Better portability (46/100 vs 25/100)
Comparison verdict
Comparing the Redmi K100 vs the Samsung Galaxy S25 Ultra, the Samsung Galaxy S25 Ultra scores 7 points higher (80/100 vs 73/100). In the "camera" category, the Samsung Galaxy S25 Ultra leads (81/100 vs 37/100). In the "battery" category, the Redmi K100 leads (80/100 vs 56/100). In the "performance" category, both devices are on the same level — 92/100. In the "display" category, the Redmi K100 is a bit better (94/100 vs 88/100). In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Redmi K100 (81/100 vs 37/100). In the "battery" category, the Redmi K100 notably outperforms the Samsung Galaxy S25 Ultra (80/100 vs 56/100). In the "portability" category, the Samsung Galaxy S25 Ultra notably outperforms the Redmi K100 (46/100 vs 25/100).
Specs comparison
| Specification | Redmi K100 | Samsung Galaxy S25 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3298726 | 3128552 | |
| Geekbench Single | 3013 | 3100 | |
| Geekbench Multi | 9287 | 9760 | |
| Display | 6.8" AMOLED | 6.9" Dynamic AMOLED 2X | |
| Resolution | 1280x2772 | 3120x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 10000 mAh | 5000 mAh | |
| Charging | 100W | 45W | |
| Wireless charging | 0W | 15W | |
| DXOMark (camera) | — | 151 | |
| Main camera | 50 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 12 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 17 | Android 15 / One UI 7 | |
| Brightness (peak) | 3500 nits | 2600 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | — | 162.8×77.6×8.2 mm | |
| Weight | 234 g | 218 g | |
| Launch price | — | $1299 |
Camera comparison
Redmi K100
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy S25 Ultra
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 12MP
Display comparison
Redmi K100
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy S25 Ultra
- 6.9" Dynamic AMOLED 2X
- Resolution: 3120x1440
- Refresh rate: 120 Hz
Battery and charging
Redmi K100
- 10000 mAh
- Wired: 100W
- 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 K100 and Samsung Galaxy S25 Ultra, covering their specs and all relevant benchmarks.
Redmi K100 leads Samsung Galaxy S25 Ultra by 5.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Redmi K100
Price unknownDetailed category analysis
performance
In the "performance" category, both devices are on the same level — 92/100.
display
In the "display" category, the Redmi K100 is a bit better (94/100 vs 88/100).
camera
In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Redmi K100 (81/100 vs 37/100).
battery
In the "battery" category, the Redmi K100 notably outperforms the Samsung Galaxy S25 Ultra (80/100 vs 56/100).
portability
In the "portability" category, the Samsung Galaxy S25 Ultra notably outperforms the Redmi K100 (46/100 vs 25/100).
Frequently asked questions
Which is better: the Redmi K100 or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra edges out the Redmi K100 by just 7 points — the two devices are very close in overall level.
What is the rating of the Redmi K100 and the Samsung Galaxy S25 Ultra?
The Redmi K100 has a MobileRank rating of 73/100, the Samsung Galaxy S25 Ultra — 80/100.
Which has the better camera: the Redmi K100 or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra leads on camera score (81/100 vs 37/100).
Should you choose the Redmi K100 over the Samsung Galaxy S25 Ultra?
The Redmi K100 is a better fit for gamers and power users, those who care about battery life. The Samsung Galaxy S25 Ultra is a better fit for gamers and power users, mobile photography enthusiasts.