Realme C100 5G vs Vivo iQOO 15 Ultra
The Realme C100 5G (2026) runs on the Dimensity 6300, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $210 and $799. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 45/100 (a 44-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 7000); the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 524,785); the Vivo iQOO 15 Ultra has NFC for contactless payments, the Realme C100 5G doesn't.
Realme C100 5G
Vivo iQOO 15 Ultra
- Lighter: 224g vs 227g
- Cheaper at launch: $210 vs $799
- Better portability (36/100 vs 35/100)
- Higher AnTuTu: 4602290 vs 524785
- Better Geekbench Single: 3640 vs 771
- Better Geekbench Multi: 11033 vs 1980
- Bigger battery: 7400 vs 7000 mAh
- Faster charging: 120W vs 45W
- Higher performance (99/100 vs 43/100)
- Better camera (78/100 vs 30/100)
- Longer battery life (92/100 vs 60/100)
- Better display (99/100 vs 65/100)
Comparing the Realme C100 5G vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 44 points higher (89/100 vs 45/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 43/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 60/100). Value score: Realme C100 5G — 50/100, Vivo iQOO 15 Ultra — 90/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme C100 5G (99/100 vs 43/100). In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme C100 5G (99/100 vs 65/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme C100 5G (78/100 vs 30/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme C100 5G (92/100 vs 60/100). In the "portability" category, the Realme C100 5G and the Vivo iQOO 15 Ultra are nearly equal (36/100 vs 35/100).
| Specification | Realme C100 5G | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Dimensity 6300 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 524785 | 4602290 | |
| Geekbench Single | 771 | 3640 | |
| Geekbench Multi | 1980 | 11033 | |
| Display | 6.8" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 720x1570 | 1440x3168 | |
| Refresh rate | 144 Hz | 144 Hz | |
| Battery | 7000 mAh | 7400 mAh | |
| Charging | 45W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 5 MP | 32 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB / 24GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 16 / realme UI 7.0 | Android 16 | |
| Brightness (peak) | 900 nits | 8000 nits | |
| NFC | no | yes | |
| Protection | IP64 | IP68 | |
| Dimensions | 166.8×78.2×8.9 mm | 163.7×76.8×8.7 mm | |
| Weight | 224 g | 227 g | |
| Launch price | $210 | $799 |
Realme C100 5G
- Main: 50MP f/f/1.8
- Front: 5MP
Vivo iQOO 15 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Realme C100 5G
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 144 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Realme C100 5G
- 7000 mAh
- Wired: 45W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
We compared Realme C100 5G and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Realme C100 5G by 88.6% in our overall performance rating.
Launch price difference: $589. Realme C100 5G was $589 cheaper at launch.
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme C100 5G (99/100 vs 43/100).
display
In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme C100 5G (99/100 vs 65/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme C100 5G (78/100 vs 30/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Realme C100 5G (92/100 vs 60/100).
portability
In the "portability" category, the Realme C100 5G and the Vivo iQOO 15 Ultra are nearly equal (36/100 vs 35/100).
Which is better: the Realme C100 5G or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Realme C100 5G by 44 points (89/100 vs 45/100).
What is the rating of the Realme C100 5G and the Vivo iQOO 15 Ultra?
The Realme C100 5G has a MobileRank rating of 45/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Realme C100 5G or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 30/100).
Which is more powerful: the Realme C100 5G or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 43/100).
Should you choose the Realme C100 5G over the Vivo iQOO 15 Ultra?
The Realme C100 5G is a better fit for everyday use. The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.