Redmi K40 Pro vs Vivo iQOO 15 Ultra
The Redmi K40 Pro (2021) runs on the Qualcomm Snapdragon 888, 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 56/100 (a 33-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 4520); the main camera is 64 MP vs 50 MP; the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 1,135,878); the Redmi K40 Pro is noticeably lighter (196g vs 227g).
Profile comparison
Category scores
Redmi K40 Pro
Vivo iQOO 15 Ultra
What makes Redmi K40 Pro better?
- Better main camera: 64MP vs 50MP
- Lighter: 196g vs 227g
- Better portability (64/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 1135878
- Better Geekbench Single: 3639 vs 1500
- Better Geekbench Multi: 11047 vs 3537
- Bigger battery: 7400 vs 4520 mAh
- Faster charging: 120W vs 33W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (99/100 vs 64/100)
- Better camera (78/100 vs 44/100)
- Longer battery life (92/100 vs 36/100)
- Better display (99/100 vs 79/100)
Comparison verdict
Comparing the Redmi K40 Pro vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 33 points higher (89/100 vs 56/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 64/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 44/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 36/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (99/100 vs 64/100). In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Redmi K40 Pro (99/100 vs 79/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (78/100 vs 44/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (92/100 vs 36/100). In the "portability" category, the Redmi K40 Pro notably outperforms the Vivo iQOO 15 Ultra (64/100 vs 35/100).
Specs comparison
| Specification | Redmi K40 Pro | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 1135878 | 4602290 | |
| Geekbench Single | 1500 | 3639 | |
| Geekbench Multi | 3537 | 11047 | |
| Display | 6.7" Super AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 1080x2400 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 4520 mAh | 7400 mAh | |
| Charging | 33W | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 6GB / 8GB | 12GB / 16GB / 24GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 11, MIUI 12 | Android 16 | |
| Brightness (peak) | 1300 nits | 8000 nits | |
| NFC | yes | yes | |
| Protection | IP53 | IP68 | |
| Dimensions | 163.7×76.4×7.8 mm | 163.7×76.8×8.7 mm | |
| Weight | 196 g | 227 g | |
| Launch price | — | $799 |
Camera comparison
Redmi K40 Pro
- Main: 64MP f/1.9
- Ultrawide: 8MP
- Front: 20MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
Redmi K40 Pro
- 6.7" Super AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
Redmi K40 Pro
- 4520 mAh
- Wired: 33W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared Redmi K40 Pro and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads Redmi K40 Pro by 75.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Redmi K40 Pro
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (99/100 vs 64/100).
display
In the "display" category, the Vivo iQOO 15 Ultra notably outperforms the Redmi K40 Pro (99/100 vs 79/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (78/100 vs 44/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (92/100 vs 36/100).
portability
In the "portability" category, the Redmi K40 Pro notably outperforms the Vivo iQOO 15 Ultra (64/100 vs 35/100).
Frequently asked questions
Which is better: the Redmi K40 Pro or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro by 33 points (89/100 vs 56/100).
What is the rating of the Redmi K40 Pro and the Vivo iQOO 15 Ultra?
The Redmi K40 Pro has a MobileRank rating of 56/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the Redmi K40 Pro or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 44/100).
Which is more powerful: the Redmi K40 Pro or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 64/100).
Should you choose the Redmi K40 Pro over the Vivo iQOO 15 Ultra?
The Redmi K40 Pro is a better fit for active users. The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.