Redmi K40 vs Vivo iQOO 15T
The Redmi K40 (2021) runs on the Qualcomm Snapdragon 870, while the Vivo iQOO 15T (2026) runs on the MediaTek Dimensity 9500; launch prices were $309 and $499. By overall MobileRank rating, the Vivo iQOO 15T leads — 82/100 vs 54/100 (a 28-point difference). Key differences: the Vivo iQOO 15T has the bigger battery (8000 mAh vs 4520); the main camera is 48 MP vs 200 MP; the Vivo iQOO 15T is faster in AnTuTu (3,815,522 vs 1,010,069); the Redmi K40 is noticeably lighter (196g vs 216g).
Redmi K40
Vivo iQOO 15T
- Lighter: 196g vs 216g
- Cheaper at launch: $309 vs $499
- Better portability (64/100 vs 44/100)
- Higher AnTuTu: 3815522 vs 1010069
- Better Geekbench Single: 3228 vs 1298
- Better Geekbench Multi: 9553 vs 3520
- Bigger battery: 8000 vs 4520 mAh
- Faster charging: 100W vs 33W
- Better main camera: 200MP vs 48MP
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (95/100 vs 61/100)
- Better camera (65/100 vs 36/100)
- Longer battery life (75/100 vs 42/100)
- Better display (99/100 vs 79/100)
Comparing the Redmi K40 vs the Vivo iQOO 15T, the Vivo iQOO 15T scores 28 points higher (82/100 vs 54/100). In the "performance" category, the Vivo iQOO 15T leads (95/100 vs 61/100). In the "camera" category, the Vivo iQOO 15T leads (65/100 vs 36/100). In the "battery" category, the Vivo iQOO 15T leads (75/100 vs 42/100). Value score: Redmi K40 — 50/100, Vivo iQOO 15T — 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 15T significantly outperforms the Redmi K40 (95/100 vs 61/100). In the "display" category, the Vivo iQOO 15T notably outperforms the Redmi K40 (99/100 vs 79/100). In the "camera" category, the Vivo iQOO 15T notably outperforms the Redmi K40 (65/100 vs 36/100). In the "battery" category, the Vivo iQOO 15T significantly outperforms the Redmi K40 (75/100 vs 42/100). In the "portability" category, the Redmi K40 notably outperforms the Vivo iQOO 15T (64/100 vs 44/100).
| Specification | Redmi K40 | Vivo iQOO 15T | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 870 | MediaTek Dimensity 9500 | |
| AnTuTu | 1010069 | 3815522 | |
| Geekbench Single | 1298 | 3228 | |
| Geekbench Multi | 3520 | 9553 | |
| Display | 6.7" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 2400x1080 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 4520 mAh | 8000 mAh | |
| Charging | 33W | 100W | |
| Main camera | 48 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Front camera | 20 MP | 16 MP | |
| RAM | 6GB / 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 11 | Android 16 | |
| NFC | — | yes | |
| Protection | — | IP68 | |
| Weight | 196 g | 216 g | |
| Launch price | $309 | $499 |
Redmi K40
- Main: 48MP f/1.79
- Ultrawide: 8MP
- Front: 20MP
Vivo iQOO 15T
- Main: 200MP f/f/1.8
- Ultrawide: 50MP
- Front: 16MP
Redmi K40
- 6.7" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Vivo iQOO 15T
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Redmi K40
- 4520 mAh
- Wired: 33W
- Wireless charging: no data
Vivo iQOO 15T
- 8000 mAh
- Wired: 100W
- No wireless charging
We compared Redmi K40 and Vivo iQOO 15T, covering their specs and all relevant benchmarks.
Vivo iQOO 15T leads Redmi K40 by 73.5% in our overall performance rating.
Launch price difference: $190. Redmi K40 was $190 cheaper at launch.
performance
In the "performance" category, the Vivo iQOO 15T significantly outperforms the Redmi K40 (95/100 vs 61/100).
display
In the "display" category, the Vivo iQOO 15T notably outperforms the Redmi K40 (99/100 vs 79/100).
camera
In the "camera" category, the Vivo iQOO 15T notably outperforms the Redmi K40 (65/100 vs 36/100).
battery
In the "battery" category, the Vivo iQOO 15T significantly outperforms the Redmi K40 (75/100 vs 42/100).
portability
In the "portability" category, the Redmi K40 notably outperforms the Vivo iQOO 15T (64/100 vs 44/100).
Which is better: the Redmi K40 or the Vivo iQOO 15T?
The Vivo iQOO 15T significantly outperforms the Redmi K40 by 28 points (82/100 vs 54/100).
What is the rating of the Redmi K40 and the Vivo iQOO 15T?
The Redmi K40 has a MobileRank rating of 54/100, the Vivo iQOO 15T — 82/100.
Which has the better camera: the Redmi K40 or the Vivo iQOO 15T?
The Vivo iQOO 15T leads on camera score (65/100 vs 36/100).
Which is more powerful: the Redmi K40 or the Vivo iQOO 15T?
The Vivo iQOO 15T leads on performance (95/100 vs 61/100).
Should you choose the Redmi K40 over the Vivo iQOO 15T?
The Redmi K40 is a better fit for active users. The Vivo iQOO 15T is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.