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 — 84/100 vs 36/100 (a 48-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 1,119,714); the Redmi K40 Pro is noticeably lighter (196g vs 227g).
Redmi K40 Pro
Vivo iQOO 15 Ultra
- Better main camera: 64MP vs 50MP
- Lighter: 196g vs 227g
- Better design/ergonomics (55/100 vs 16/100)
- Higher AnTuTu: 4602290 vs 1119714
- Better Geekbench Single: 3640 vs 1488
- Better Geekbench Multi: 11033 vs 3373
- Bigger battery: 7400 vs 4520 mAh
- Faster charging: 120W vs 33W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (97/100 vs 11/100)
- Better camera (74/100 vs 41/100)
- Longer battery life (86/100 vs 28/100)
Comparing the Redmi K40 Pro vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 48 points higher (84/100 vs 36/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (97/100 vs 11/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (74/100 vs 41/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (86/100 vs 28/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (97/100 vs 11/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (74/100 vs 41/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (86/100 vs 28/100). In the "design" category, the Redmi K40 Pro significantly outperforms the Vivo iQOO 15 Ultra (55/100 vs 16/100). In the "value for money" category, both devices are on the same level — 55/100.
| Specification | Redmi K40 Pro | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 1119714 | 4602290 | |
| Geekbench Single | 1488 | 3640 | |
| Geekbench Multi | 3373 | 11033 | |
| 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 | |
| Price | — | $799 |
Redmi K40 Pro
- Main: 64MP f/f/1.9
- Ultrawide: 8MP
- Front: 20MP
Vivo iQOO 15 Ultra
- Main: 50MP f/f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
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
Redmi K40 Pro
- 4520 mAh
- Wired: 33W
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
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 75.7% in our overall performance rating.
Redmi K40 Pro
Price unknownperformance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (97/100 vs 11/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (74/100 vs 41/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the Redmi K40 Pro (86/100 vs 28/100).
design
In the "design" category, the Redmi K40 Pro significantly outperforms the Vivo iQOO 15 Ultra (55/100 vs 16/100).
value for money
In the "value for money" category, both devices are on the same level — 55/100.
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 48 points (84/100 vs 36/100).
What is the rating of the Redmi K40 Pro and the Vivo iQOO 15 Ultra?
The Redmi K40 Pro has a MobileRank rating of 36/100, the Vivo iQOO 15 Ultra — 84/100.
Which has the better camera: the Redmi K40 Pro or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (74/100 vs 41/100).
Which is more powerful: the Redmi K40 Pro or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (97/100 vs 11/100).
Should you choose the Redmi K40 Pro over the Vivo iQOO 15 Ultra?
The Redmi K40 Pro 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.