Redmi K40S vs Xiaomi 18 Fold
The Redmi K40S (2022) runs on the Qualcomm Snapdragon 870 5G, while the Xiaomi 18 Fold (2026) runs on the Xiaomi XRING O3. By overall MobileRank rating, the Xiaomi 18 Fold leads — 86/100 vs 54/100 (a 32-point difference). Key differences: the Xiaomi 18 Fold has the bigger battery (6000 mAh vs 4500); the main camera is 48 MP vs 200 MP; the Xiaomi 18 Fold is faster in AnTuTu (5,228,014 vs 1,010,069); the Redmi K40S is noticeably lighter (195g vs 219g).
Profile comparison
Category scores
Redmi K40S
Xiaomi 18 Fold
What makes Redmi K40S better?
- Lighter: 195g vs 219g
- Better portability (65/100 vs 64/100)
What makes Xiaomi 18 Fold better?
- Higher AnTuTu: 5228014 vs 1010069
- Better Geekbench Single: 3715 vs 1298
- Better Geekbench Multi: 14213 vs 3520
- Bigger battery: 6000 vs 4500 mAh
- Better main camera: 200MP vs 48MP
- Higher performance (99/100 vs 61/100)
- Better camera (85/100 vs 36/100)
- Longer battery life (75/100 vs 42/100)
Comparison verdict
Comparing the Redmi K40S vs the Xiaomi 18 Fold, the Xiaomi 18 Fold scores 32 points higher (86/100 vs 54/100). In the "performance" category, the Xiaomi 18 Fold leads (99/100 vs 61/100). In the "camera" category, the Xiaomi 18 Fold leads (85/100 vs 36/100). In the "battery" category, the Xiaomi 18 Fold leads (75/100 vs 42/100). In the "performance" category, the Xiaomi 18 Fold significantly outperforms the Redmi K40S (99/100 vs 61/100). In the "display" category, both devices are on the same level — 79/100. In the "camera" category, the Xiaomi 18 Fold significantly outperforms the Redmi K40S (85/100 vs 36/100). In the "battery" category, the Xiaomi 18 Fold significantly outperforms the Redmi K40S (75/100 vs 42/100). In the "portability" category, the Redmi K40S and the Xiaomi 18 Fold are nearly equal (65/100 vs 64/100).
Specs comparison
| Specification | Redmi K40S | Xiaomi 18 Fold | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 870 5G | Xiaomi XRING O3 | |
| AnTuTu | 1010069 | 5228014 | |
| Geekbench Single | 1298 | 3715 | |
| Geekbench Multi | 3520 | 14213 | |
| Display | 6.7" AMOLED | 7.6" LTPO AMOLED | |
| Resolution | 1080x2400 | 1672x2364 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4500 mAh | 6000 mAh | |
| Charging | 67W | 67W | |
| Wireless charging | 0W | 50W | |
| Main camera | 48 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 20 MP | 16 MP | |
| RAM | 6GB / 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 12, MIUI 13 | Android 16 | |
| Brightness (peak) | 1300 nits | 4000 nits | |
| NFC | yes | yes | |
| Protection | — | IP59 | |
| Dimensions | 163.2×76.0×7.7 mm | 159.7×145.1×5.0 mm | |
| Weight | 195 g | 219 g | |
| Launch price | — | $1639 |
Camera comparison
Redmi K40S
- Main: 48MP f/1.8
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 18 Fold
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 16MP
Display comparison
Redmi K40S
- 6.7" AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Xiaomi 18 Fold
- 7.6" LTPO AMOLED
- Resolution: 1672x2364
- Refresh rate: 120 Hz
Battery and charging
Redmi K40S
- 4500 mAh
- Wired: 67W
- No wireless charging
Xiaomi 18 Fold
- 6000 mAh
- Wired: 67W
- Wireless: 50W
Overall performance score
We compared Redmi K40S and Xiaomi 18 Fold, covering their specs and all relevant benchmarks.
Xiaomi 18 Fold leads Redmi K40S by 80.7% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Redmi K40S
Price unknownDetailed category analysis
performance
In the "performance" category, the Xiaomi 18 Fold significantly outperforms the Redmi K40S (99/100 vs 61/100).
display
In the "display" category, both devices are on the same level — 79/100.
camera
In the "camera" category, the Xiaomi 18 Fold significantly outperforms the Redmi K40S (85/100 vs 36/100).
battery
In the "battery" category, the Xiaomi 18 Fold significantly outperforms the Redmi K40S (75/100 vs 42/100).
portability
In the "portability" category, the Redmi K40S and the Xiaomi 18 Fold are nearly equal (65/100 vs 64/100).
Frequently asked questions
Which is better: the Redmi K40S or the Xiaomi 18 Fold?
The Xiaomi 18 Fold significantly outperforms the Redmi K40S by 32 points (86/100 vs 54/100).
What is the rating of the Redmi K40S and the Xiaomi 18 Fold?
The Redmi K40S has a MobileRank rating of 54/100, the Xiaomi 18 Fold — 86/100.
Which has the better camera: the Redmi K40S or the Xiaomi 18 Fold?
The Xiaomi 18 Fold leads on camera score (85/100 vs 36/100).
Which is more powerful: the Redmi K40S or the Xiaomi 18 Fold?
The Xiaomi 18 Fold leads on performance (99/100 vs 61/100).
Should you choose the Redmi K40S over the Xiaomi 18 Fold?
The Redmi K40S is a better fit for active users. The Xiaomi 18 Fold is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.