Realme C100 4G vs Samsung Galaxy S25 Ultra
The Realme C100 4G (2026) runs on the Helio G92 Max, while the Samsung Galaxy S25 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $269 and $1299. By overall MobileRank rating, the Samsung Galaxy S25 Ultra leads — 80/100 vs 38/100 (a 42-point difference). Key differences: the Realme C100 4G has the bigger battery (8000 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 365,001).
Profile comparison
Category scores
Realme C100 4G
Samsung Galaxy S25 Ultra
What makes Realme C100 4G better?
- Bigger battery: 8000 vs 5000 mAh
- Cheaper at launch: $269 vs $1299
- Longer battery life (58/100 vs 56/100)
What makes Samsung Galaxy S25 Ultra better?
- Higher AnTuTu: 3128552 vs 365001
- Better Geekbench Single: 3100 vs 430
- Better Geekbench Multi: 9760 vs 1375
- Faster charging: 45W vs 15W
- Better main camera: 200MP vs 50MP
- Lighter: 218g vs 219g
- Higher performance (92/100 vs 29/100)
- Better camera (81/100 vs 30/100)
- Better display (88/100 vs 55/100)
- Better portability (46/100 vs 41/100)
Comparison verdict
Comparing the Realme C100 4G vs the Samsung Galaxy S25 Ultra, the Samsung Galaxy S25 Ultra scores 42 points higher (80/100 vs 38/100). In the "performance" category, the Samsung Galaxy S25 Ultra leads (92/100 vs 29/100). In the "camera" category, the Samsung Galaxy S25 Ultra leads (81/100 vs 30/100). Value score: Realme C100 4G — 22/100, 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 Realme C100 4G (92/100 vs 29/100). In the "display" category, the Samsung Galaxy S25 Ultra significantly outperforms the Realme C100 4G (88/100 vs 55/100). In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Realme C100 4G (81/100 vs 30/100). In the "battery" category, the Realme C100 4G and the Samsung Galaxy S25 Ultra are nearly equal (58/100 vs 56/100). In the "portability" category, the Samsung Galaxy S25 Ultra is a bit better (46/100 vs 41/100).
Specs comparison
| Specification | Realme C100 4G | Samsung Galaxy S25 Ultra | |
|---|---|---|---|
| Processor | Helio G92 Max | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 365001 | 3128552 | |
| Geekbench Single | 430 | 3100 | |
| Geekbench Multi | 1375 | 9760 | |
| Display | 6.8" IPS LCD | 6.9" Dynamic AMOLED 2X | |
| Resolution | 720x1570 | 3120x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 8000 mAh | 5000 mAh | |
| Charging | 15W | 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 | Android 16 / realme UI 7.0 | Android 15 / One UI 7 | |
| Brightness (peak) | 1200 nits | 2600 nits | |
| NFC | yes | yes | |
| Protection | IP68/IP69K | IP68 | |
| Dimensions | 166.5×78.2×8.6 mm | 162.8×77.6×8.2 mm | |
| Weight | 219 g | 218 g | |
| Launch price | $269 | $1299 |
Camera comparison
Realme C100 4G
- Main: 50MP f/1.8
- Front: 8MP
Samsung Galaxy S25 Ultra
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 12MP
Display comparison
Realme C100 4G
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 120 Hz
Samsung Galaxy S25 Ultra
- 6.9" Dynamic AMOLED 2X
- Resolution: 3120x1440
- Refresh rate: 120 Hz
Battery and charging
Realme C100 4G
- 8000 mAh
- Wired: 15W
- 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 Realme C100 4G and Samsung Galaxy S25 Ultra, covering their specs and all relevant benchmarks.
Samsung Galaxy S25 Ultra leads Realme C100 4G by 88.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $1030. Realme C100 4G was $1030 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Samsung Galaxy S25 Ultra significantly outperforms the Realme C100 4G (92/100 vs 29/100).
display
In the "display" category, the Samsung Galaxy S25 Ultra significantly outperforms the Realme C100 4G (88/100 vs 55/100).
camera
In the "camera" category, the Samsung Galaxy S25 Ultra significantly outperforms the Realme C100 4G (81/100 vs 30/100).
battery
In the "battery" category, the Realme C100 4G and the Samsung Galaxy S25 Ultra are nearly equal (58/100 vs 56/100).
portability
In the "portability" category, the Samsung Galaxy S25 Ultra is a bit better (46/100 vs 41/100).
Frequently asked questions
Which is better: the Realme C100 4G or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra significantly outperforms the Realme C100 4G by 42 points (80/100 vs 38/100).
What is the rating of the Realme C100 4G and the Samsung Galaxy S25 Ultra?
The Realme C100 4G has a MobileRank rating of 38/100, the Samsung Galaxy S25 Ultra — 80/100.
Which has the better camera: the Realme C100 4G 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 Realme C100 4G or the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra leads on performance (92/100 vs 29/100).
Should you choose the Realme C100 4G over the Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra is a better fit for gamers and power users, mobile photography enthusiasts.