Redmi K40S vs Xiaomi 18 Pro Max
The Redmi K40S (2022) runs on the Qualcomm Snapdragon 870 5G, while the Xiaomi 18 Pro Max (2026) runs on the Qualcomm Snapdragon 8 Elite Extreme Gen 6. By overall MobileRank rating, the Xiaomi 18 Pro Max leads — 92/100 vs 54/100 (a 38-point difference). Key differences: the Xiaomi 18 Pro Max has the bigger battery (8500 mAh vs 4500); the main camera is 48 MP vs 200 MP; the Xiaomi 18 Pro Max is faster in AnTuTu (5,001,234 vs 1,010,069); the Redmi K40S is noticeably lighter (195g vs 235g).
Profile comparison
Category scores
Redmi K40S
Xiaomi 18 Pro Max
What makes Redmi K40S better?
- Lighter: 195g vs 235g
- Better portability (65/100 vs 33/100)
What makes Xiaomi 18 Pro Max better?
- Higher AnTuTu: 5001234 vs 1010069
- Better Geekbench Single: 4327 vs 1298
- Better Geekbench Multi: 12873 vs 3520
- Bigger battery: 8500 vs 4500 mAh
- Faster charging: 100W vs 67W
- Better main camera: 200MP vs 48MP
- Higher performance (100/100 vs 61/100)
- Better camera (100/100 vs 36/100)
- Longer battery life (92/100 vs 42/100)
- Better display (82/100 vs 79/100)
Comparison verdict
Comparing the Redmi K40S vs the Xiaomi 18 Pro Max, the Xiaomi 18 Pro Max scores 38 points higher (92/100 vs 54/100). In the "performance" category, the Xiaomi 18 Pro Max leads (100/100 vs 61/100). In the "camera" category, the Xiaomi 18 Pro Max leads (100/100 vs 36/100). In the "battery" category, the Xiaomi 18 Pro Max leads (92/100 vs 42/100). In the "performance" category, the Xiaomi 18 Pro Max significantly outperforms the Redmi K40S (100/100 vs 61/100). In the "display" category, the Xiaomi 18 Pro Max and the Redmi K40S are nearly equal (82/100 vs 79/100). In the "camera" category, the Xiaomi 18 Pro Max significantly outperforms the Redmi K40S (100/100 vs 36/100). In the "battery" category, the Xiaomi 18 Pro Max significantly outperforms the Redmi K40S (92/100 vs 42/100). In the "portability" category, the Redmi K40S significantly outperforms the Xiaomi 18 Pro Max (65/100 vs 33/100).
Specs comparison
| Specification | Redmi K40S | Xiaomi 18 Pro Max | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 870 5G | Qualcomm Snapdragon 8 Elite Extreme Gen 6 | |
| AnTuTu | 1010069 | 5001234 | |
| Geekbench Single | 1298 | 4327 | |
| Geekbench Multi | 3520 | 12873 | |
| Display | 6.7" AMOLED | 6.9" LTPO AMOLED | |
| Resolution | 1080x2400 | 1208x2624 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4500 mAh | 8500 mAh | |
| Charging | 67W | 100W | |
| Wireless charging | 0W | 50W | |
| Main camera | 48 MP | 200 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 200 MP | |
| Front camera | 20 MP | 50 MP | |
| RAM | 6GB / 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 12, MIUI 13 | Android 17 | |
| Brightness (peak) | 1300 nits | 4000 nits | |
| NFC | yes | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 163.2×76.0×7.7 mm | 163.4×77.6×8.4 mm | |
| Weight | 195 g | 235 g | |
| Launch price | — | $986 |
Camera comparison
Redmi K40S
- Main: 48MP f/1.8
- Ultrawide: 8MP
- Front: 20MP
Xiaomi 18 Pro Max
- Main: 200MP f/1.7
- Ultrawide: 50MP
- Telephoto: 200MP
- Front: 50MP
Display comparison
Redmi K40S
- 6.7" AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Xiaomi 18 Pro Max
- 6.9" LTPO AMOLED
- Resolution: 1208x2624
- Refresh rate: 120 Hz
Battery and charging
Redmi K40S
- 4500 mAh
- Wired: 67W
- No wireless charging
Xiaomi 18 Pro Max
- 8500 mAh
- Wired: 100W
- Wireless: 50W
Overall performance score
We compared Redmi K40S and Xiaomi 18 Pro Max, covering their specs and all relevant benchmarks.
Xiaomi 18 Pro Max leads Redmi K40S by 79.8% 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 Pro Max significantly outperforms the Redmi K40S (100/100 vs 61/100).
display
In the "display" category, the Xiaomi 18 Pro Max and the Redmi K40S are nearly equal (82/100 vs 79/100).
camera
In the "camera" category, the Xiaomi 18 Pro Max significantly outperforms the Redmi K40S (100/100 vs 36/100).
battery
In the "battery" category, the Xiaomi 18 Pro Max significantly outperforms the Redmi K40S (92/100 vs 42/100).
portability
In the "portability" category, the Redmi K40S significantly outperforms the Xiaomi 18 Pro Max (65/100 vs 33/100).
Frequently asked questions
Which is better: the Redmi K40S or the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max significantly outperforms the Redmi K40S by 38 points (92/100 vs 54/100).
What is the rating of the Redmi K40S and the Xiaomi 18 Pro Max?
The Redmi K40S has a MobileRank rating of 54/100, the Xiaomi 18 Pro Max — 92/100.
Which has the better camera: the Redmi K40S or the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max leads on camera score (100/100 vs 36/100).
Which is more powerful: the Redmi K40S or the Xiaomi 18 Pro Max?
The Xiaomi 18 Pro Max leads on performance (100/100 vs 61/100).
Should you choose the Redmi K40S over the Xiaomi 18 Pro Max?
The Redmi K40S is a better fit for active users. The Xiaomi 18 Pro Max is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.