Oukitel C18 vs Vivo iQOO 15 Ultra
The Oukitel C18 (2026) runs on the Unisoc Tiger T310, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 27/100 (a 62-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 5000); the main camera is 13 MP vs 50 MP; the Oukitel C18 is noticeably lighter (198g vs 227g).
Profile comparison
Category scores
Oukitel C18
Vivo iQOO 15 Ultra
What makes Oukitel C18 better?
- Lighter: 198g vs 227g
- Better portability (46/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Bigger battery: 7400 vs 5000 mAh
- Faster charging: 120W vs 10W
- Better main camera: 50MP vs 13MP
- Higher refresh rate: 144Hz vs 60Hz
- Better camera (78/100 vs 10/100)
- Longer battery life (92/100 vs 43/100)
- Better display (99/100 vs 31/100)
Comparison verdict
Comparing the Oukitel C18 vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 62 points higher (89/100 vs 27/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 10/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 43/100). In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 (99/100 vs 31/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 (78/100 vs 10/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 (92/100 vs 43/100). In the "portability" category, the Oukitel C18 is a bit better (46/100 vs 35/100).
Specs comparison
| Specification | Oukitel C18 | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Unisoc Tiger T310 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | — | 4602290 | |
| Geekbench Single | — | 3639 | |
| Geekbench Multi | — | 11047 | |
| Display | 6.5" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 540x1200 | 1440x3168 | |
| Refresh rate | 60 Hz | 144 Hz | |
| Battery | 5000 mAh | 7400 mAh | |
| Charging | 10W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 13 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 5 MP | 32 MP | |
| RAM | 4GB | 12GB / 16GB / 24GB | |
| Storage | 64GB / 128GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | — | 8000 nits | |
| NFC | — | yes | |
| Protection | — | IP68 | |
| Dimensions | 163.6×75.9×9.3 mm | 163.7×76.8×8.7 mm | |
| Weight | 198 g | 227 g | |
| Launch price | — | $799 |
Camera comparison
Oukitel C18
- Main: 13MP
- Front: 5MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Oukitel C18
- 6.5" IPS LCD
- Resolution: 540x1200
- Refresh rate: 60 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Oukitel C18
- 5000 mAh
- Wired: 10W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Benchmarks
Launch prices and where to check today's
Oukitel C18
Price unknownDetailed category analysis
display
In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 (99/100 vs 31/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 (78/100 vs 10/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 (92/100 vs 43/100).
portability
In the "portability" category, the Oukitel C18 is a bit better (46/100 vs 35/100).
Frequently asked questions
Which is better: the Oukitel C18 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 by 62 points (89/100 vs 27/100).
What is the rating of the Oukitel C18 and the Vivo iQOO 15 Ultra?
The Oukitel C18 has a MobileRank rating of 27/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Oukitel C18 or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 10/100).
Should you choose the Oukitel C18 over the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.