Oukitel C18 Pro Max vs Vivo iQOO 15 Ultra
The Oukitel C18 Pro Max (2026) runs on the Unisoc T615, 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 34/100 (a 55-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 5000); the main camera is 64 MP vs 50 MP; the Oukitel C18 Pro Max is noticeably lighter (205g vs 227g).
Profile comparison
Category scores
Oukitel C18 Pro Max
Vivo iQOO 15 Ultra
What makes Oukitel C18 Pro Max better?
- Better main camera: 64MP vs 50MP
- Lighter: 205g vs 227g
- Better portability (47/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Better Geekbench Single: 3639 vs 380
- Better Geekbench Multi: 11047 vs 1300
- Bigger battery: 7400 vs 5000 mAh
- Faster charging: 120W vs 18W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 18/100)
- Better camera (78/100 vs 37/100)
- Longer battery life (92/100 vs 43/100)
- Better display (99/100 vs 55/100)
Comparison verdict
Comparing the Oukitel C18 Pro Max vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 55 points higher (89/100 vs 34/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 18/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 37/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 43/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 Pro Max (99/100 vs 18/100). In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 Pro Max (99/100 vs 55/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 Pro Max (78/100 vs 37/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 Pro Max (92/100 vs 43/100). In the "portability" category, the Oukitel C18 Pro Max is a bit better (47/100 vs 35/100).
Specs comparison
| Specification | Oukitel C18 Pro Max | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Unisoc T615 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | — | 4602290 | |
| Geekbench Single | 380 | 3639 | |
| Geekbench Multi | 1300 | 11047 | |
| Display | 6.9" TFT LCD | 6.8" LTPO AMOLED | |
| Resolution | 720x1560 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 5000 mAh | 7400 mAh | |
| Charging | 18W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 8 MP | 32 MP | |
| RAM | 4GB / 6GB | 12GB / 16GB / 24GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | — | 8000 nits | |
| NFC | — | yes | |
| Protection | — | IP68 | |
| Dimensions | 163.8×78.3×8.8 mm | 163.7×76.8×8.7 mm | |
| Weight | 205 g | 227 g | |
| Launch price | — | $799 |
Camera comparison
Oukitel C18 Pro Max
- Main: 64MP
- Front: 8MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Oukitel C18 Pro Max
- 6.9" TFT LCD
- Resolution: 720x1560
- Refresh rate: 120 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Oukitel C18 Pro Max
- 5000 mAh
- Wired: 18W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Benchmarks
Launch prices and where to check today's
Oukitel C18 Pro Max
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 Pro Max (99/100 vs 18/100).
display
In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 Pro Max (99/100 vs 55/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 Pro Max (78/100 vs 37/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 Pro Max (92/100 vs 43/100).
portability
In the "portability" category, the Oukitel C18 Pro Max is a bit better (47/100 vs 35/100).
Frequently asked questions
Which is better: the Oukitel C18 Pro Max or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Oukitel C18 Pro Max by 55 points (89/100 vs 34/100).
What is the rating of the Oukitel C18 Pro Max and the Vivo iQOO 15 Ultra?
The Oukitel C18 Pro Max has a MobileRank rating of 34/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Oukitel C18 Pro Max or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 37/100).
Which is more powerful: the Oukitel C18 Pro Max or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 18/100).
Should you choose the Oukitel C18 Pro Max 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.