Redmi K40 vs Vivo X Fold6
The Redmi K40 (2021) runs on the Qualcomm Snapdragon 870, while the Vivo X Fold6 (2026) runs on the MediaTek Dimensity 9500; launch prices were $309 and $1900. By overall MobileRank rating, the Vivo X Fold6 leads — 88/100 vs 54/100 (a 34-point difference). Key differences: the Vivo X Fold6 has the bigger battery (6900 mAh vs 4520); the main camera is 48 MP vs 200 MP; the Vivo X Fold6 is faster in AnTuTu (3,455,738 vs 1,010,069); the Vivo X Fold6 is thinner (4.3mm vs 7.8mm).
Profile comparison
Category scores
Redmi K40
Vivo X Fold6
What makes Redmi K40 better?
- Cheaper at launch: $309 vs $1900
- Overall rating 54/100
What makes Vivo X Fold6 better?
- Higher AnTuTu: 3455738 vs 1010069
- Better Geekbench Single: 3293 vs 1298
- Better Geekbench Multi: 10243 vs 3520
- Bigger battery: 6900 vs 4520 mAh
- Faster charging: 80W vs 33W
- Better main camera: 200MP vs 48MP
- Higher performance (95/100 vs 61/100)
- Better camera (87/100 vs 36/100)
- Longer battery life (82/100 vs 42/100)
- Better display (81/100 vs 79/100)
- Better portability (100/100 vs 64/100)
Comparison verdict
Comparing the Redmi K40 vs the Vivo X Fold6, the Vivo X Fold6 scores 34 points higher (88/100 vs 54/100). In the "performance" category, the Vivo X Fold6 leads (95/100 vs 61/100). In the "camera" category, the Vivo X Fold6 leads (87/100 vs 36/100). In the "battery" category, the Vivo X Fold6 leads (82/100 vs 42/100). Value score: Redmi K40 — 46/100, Vivo X Fold6 — 84/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Vivo X Fold6 significantly outperforms the Redmi K40 (95/100 vs 61/100). In the "display" category, the Vivo X Fold6 and the Redmi K40 are nearly equal (81/100 vs 79/100). In the "camera" category, the Vivo X Fold6 significantly outperforms the Redmi K40 (87/100 vs 36/100). In the "battery" category, the Vivo X Fold6 significantly outperforms the Redmi K40 (82/100 vs 42/100). In the "portability" category, the Vivo X Fold6 significantly outperforms the Redmi K40 (100/100 vs 64/100).
Specs comparison
| Specification | Redmi K40 | Vivo X Fold6 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 870 | MediaTek Dimensity 9500 | |
| AnTuTu | 1010069 | 3455738 | |
| Geekbench Single | 1298 | 3293 | |
| Geekbench Multi | 3520 | 10243 | |
| Display | 6.7" AMOLED | 8.0" LTPO AMOLED | |
| Resolution | 2400x1080 | 2480x2200 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4520 mAh | 6900 mAh | |
| Charging | 33W | 80W | |
| Wireless charging | — | 50W | |
| Main camera | 48 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 20 MP | |
| RAM | 6GB / 8GB / 12GB | 16GB | |
| Storage | 128GB / 256GB | 512GB | |
| OS | Android 11 | Android 15 | |
| Brightness (peak) | 1300 nits | 5500 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 163.7×76.4×7.8 mm | 159.7×142.3×4.3 mm | |
| Weight | 196 g | — | |
| Launch price | $309 | $1900 |
Camera comparison
Redmi K40
- Main: 48MP f/1.79
- Ultrawide: 8MP
- Front: 20MP
Vivo X Fold6
- Main: 200MP f/1.75
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 20MP
Display comparison
Redmi K40
- 6.7" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Vivo X Fold6
- 8.0" LTPO AMOLED
- Resolution: 2480x2200
- Refresh rate: 120 Hz
Battery and charging
Redmi K40
- 4520 mAh
- Wired: 33W
- Wireless charging: no data
Vivo X Fold6
- 6900 mAh
- Wired: 80W
- Wireless: 50W
Overall performance score
We compared Redmi K40 and Vivo X Fold6, covering their specs and all relevant benchmarks.
Vivo X Fold6 leads Redmi K40 by 70.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $1591. Redmi K40 was $1591 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X Fold6 significantly outperforms the Redmi K40 (95/100 vs 61/100).
display
In the "display" category, the Vivo X Fold6 and the Redmi K40 are nearly equal (81/100 vs 79/100).
camera
In the "camera" category, the Vivo X Fold6 significantly outperforms the Redmi K40 (87/100 vs 36/100).
battery
In the "battery" category, the Vivo X Fold6 significantly outperforms the Redmi K40 (82/100 vs 42/100).
portability
In the "portability" category, the Vivo X Fold6 significantly outperforms the Redmi K40 (100/100 vs 64/100).
Frequently asked questions
Which is better: the Redmi K40 or the Vivo X Fold6?
The Vivo X Fold6 significantly outperforms the Redmi K40 by 34 points (88/100 vs 54/100).
What is the rating of the Redmi K40 and the Vivo X Fold6?
The Redmi K40 has a MobileRank rating of 54/100, the Vivo X Fold6 — 88/100.
Which has the better camera: the Redmi K40 or the Vivo X Fold6?
The Vivo X Fold6 leads on camera score (87/100 vs 36/100).
Which is more powerful: the Redmi K40 or the Vivo X Fold6?
The Vivo X Fold6 leads on performance (95/100 vs 61/100).
Should you choose the Redmi K40 over the Vivo X Fold6?
The Redmi K40 is a better fit for active users. The Vivo X Fold6 is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.