Redmi K40 vs ZTE Axon 31 Ultra 5G
The Redmi K40 (2021) runs on the Qualcomm Snapdragon 870, while the ZTE Axon 31 Ultra 5G (2021) runs on the Qualcomm Snapdragon 888. By overall MobileRank rating, the ZTE Axon 31 Ultra 5G leads — 65/100 vs 54/100 (a 11-point difference). Key differences: the ZTE Axon 31 Ultra 5G has the bigger battery (4600 mAh vs 4520); the main camera is 48 MP vs 64 MP; the ZTE Axon 31 Ultra 5G is faster in AnTuTu (1,135,878 vs 1,010,069).
Profile comparison
Category scores
Redmi K40
ZTE Axon 31 Ultra 5G
What makes Redmi K40 better?
- Longer battery life (42/100 vs 41/100)
What makes ZTE Axon 31 Ultra 5G better?
- Higher AnTuTu: 1135878 vs 1010069
- Better Geekbench Single: 1500 vs 1298
- Better Geekbench Multi: 3537 vs 3520
- Bigger battery: 4600 vs 4520 mAh
- Better main camera: 64MP vs 48MP
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 188g vs 196g
- Higher performance (64/100 vs 61/100)
- Better camera (71/100 vs 36/100)
- Better display (89/100 vs 79/100)
- Better portability (67/100 vs 64/100)
Comparison verdict
Comparing the Redmi K40 vs the ZTE Axon 31 Ultra 5G, the ZTE Axon 31 Ultra 5G scores 11 points higher (65/100 vs 54/100). In the "camera" category, the ZTE Axon 31 Ultra 5G leads (71/100 vs 36/100). In the "performance" category, the ZTE Axon 31 Ultra 5G and the Redmi K40 are nearly equal (64/100 vs 61/100). In the "display" category, the ZTE Axon 31 Ultra 5G is a bit better (89/100 vs 79/100). In the "camera" category, the ZTE Axon 31 Ultra 5G significantly outperforms the Redmi K40 (71/100 vs 36/100). In the "battery" category, the Redmi K40 and the ZTE Axon 31 Ultra 5G are nearly equal (42/100 vs 41/100). In the "portability" category, the ZTE Axon 31 Ultra 5G and the Redmi K40 are nearly equal (67/100 vs 64/100).
Specs comparison
| Specification | Redmi K40 | ZTE Axon 31 Ultra 5G | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 870 | Qualcomm Snapdragon 888 | |
| AnTuTu | 1010069 | 1135878 | |
| Geekbench Single | 1298 | 1500 | |
| Geekbench Multi | 3520 | 3537 | |
| Display | 6.7" AMOLED | 6.7" Super Amoled | |
| Resolution | 2400x1080 | 1080x2400 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 4520 mAh | 4600 mAh | |
| Charging | 33W | — | |
| Main camera | 48 MP | 64 MP | |
| Ultrawide | 8 MP | 64 MP | |
| Telephoto | 0 MP | 8 MP | |
| Front camera | 20 MP | 44 MP | |
| RAM | 6GB / 8GB / 12GB | — | |
| Storage | 128GB / 256GB | 512GB | |
| OS | Android 11 | Android 11 Red Velvet Cake | |
| Brightness (peak) | 1300 nits | — | |
| NFC | yes | yes | |
| Dimensions | 163.7×76.4×7.8 mm | 161.5×73.0×8.0 mm | |
| Weight | 196 g | 188 g | |
| Launch price | $309 | — |
Camera comparison
Redmi K40
- Main: 48MP f/1.79
- Ultrawide: 8MP
- Front: 20MP
ZTE Axon 31 Ultra 5G
- Main: 64MP
- Ultrawide: 64MP
- Telephoto: 8MP
- Front: 44MP
Display comparison
Redmi K40
- 6.7" AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
ZTE Axon 31 Ultra 5G
- 6.7" Super Amoled
- Resolution: 1080x2400
- Refresh rate: 144 Hz
Battery and charging
Redmi K40
- 4520 mAh
- Wired: 33W
- Wireless charging: no data
ZTE Axon 31 Ultra 5G
- 4600 mAh
- No wireless charging
Overall performance score
We compared Redmi K40 and ZTE Axon 31 Ultra 5G, covering their specs and all relevant benchmarks.
ZTE Axon 31 Ultra 5G leads Redmi K40 by 11.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
ZTE Axon 31 Ultra 5G
Price unknownDetailed category analysis
performance
In the "performance" category, the ZTE Axon 31 Ultra 5G and the Redmi K40 are nearly equal (64/100 vs 61/100).
display
In the "display" category, the ZTE Axon 31 Ultra 5G is a bit better (89/100 vs 79/100).
camera
In the "camera" category, the ZTE Axon 31 Ultra 5G significantly outperforms the Redmi K40 (71/100 vs 36/100).
battery
In the "battery" category, the Redmi K40 and the ZTE Axon 31 Ultra 5G are nearly equal (42/100 vs 41/100).
portability
In the "portability" category, the ZTE Axon 31 Ultra 5G and the Redmi K40 are nearly equal (67/100 vs 64/100).
Frequently asked questions
Which is better: the Redmi K40 or the ZTE Axon 31 Ultra 5G?
The ZTE Axon 31 Ultra 5G is noticeably better than the Redmi K40 — the overall rating gap is 11 points.
What is the rating of the Redmi K40 and the ZTE Axon 31 Ultra 5G?
The Redmi K40 has a MobileRank rating of 54/100, the ZTE Axon 31 Ultra 5G — 65/100.
Which has the better camera: the Redmi K40 or the ZTE Axon 31 Ultra 5G?
The ZTE Axon 31 Ultra 5G leads on camera score (71/100 vs 36/100).
Should you choose the Redmi K40 over the ZTE Axon 31 Ultra 5G?
The Redmi K40 is a better fit for active users. The ZTE Axon 31 Ultra 5G is a better fit for active users.