Redmi K90 Ultra vs ZTE Axon 31 Ultra 5G
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the ZTE Axon 31 Ultra 5G (2021) runs on the Qualcomm Snapdragon 888. By overall MobileRank rating, the Redmi K90 Ultra leads — 75/100 vs 65/100 (a 10-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4600); the main camera is 50 MP vs 64 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 1,119,714); the ZTE Axon 31 Ultra 5G is noticeably lighter (188g vs 227g).
Redmi K90 Ultra
ZTE Axon 31 Ultra 5G
- Higher AnTuTu: 3119308 vs 1119714
- Better Geekbench Single: 3041 vs 1488
- Better Geekbench Multi: 9494 vs 3373
- Bigger battery: 8550 vs 4600 mAh
- Higher refresh rate: 165Hz vs 144Hz
- Higher performance (92/100 vs 63/100)
- Longer battery life (92/100 vs 41/100)
- Better display (94/100 vs 89/100)
- Better main camera: 64MP vs 50MP
- Lighter: 188g vs 227g
- Better camera (71/100 vs 37/100)
- Better portability (67/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the ZTE Axon 31 Ultra 5G, the Redmi K90 Ultra scores 10 points higher (75/100 vs 65/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 63/100). In the "camera" category, the ZTE Axon 31 Ultra 5G leads (71/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (92/100 vs 41/100). In the "performance" category, the Redmi K90 Ultra notably outperforms the ZTE Axon 31 Ultra 5G (92/100 vs 63/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 89/100). In the "camera" category, the ZTE Axon 31 Ultra 5G significantly outperforms the Redmi K90 Ultra (71/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the ZTE Axon 31 Ultra 5G (92/100 vs 41/100). In the "portability" category, the ZTE Axon 31 Ultra 5G notably outperforms the Redmi K90 Ultra (67/100 vs 40/100).
| Specification | Redmi K90 Ultra | ZTE Axon 31 Ultra 5G | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 888 | |
| AnTuTu | 3119308 | 1119714 | |
| Geekbench Single | 3041 | 1488 | |
| Geekbench Multi | 9494 | 3373 | |
| Display | 6.8" AMOLED | 6.7" Super Amoled | |
| Resolution | 1280x2772 | 1080x2400 | |
| Refresh rate | 165 Hz | 144 Hz | |
| Battery | 8550 mAh | 4600 mAh | |
| Charging | 100W | — | |
| Main camera | 50 MP | 64 MP | |
| Ultrawide | 8 MP | 64 MP | |
| Telephoto | 0 MP | 8 MP | |
| Front camera | 20 MP | 44 MP | |
| RAM | 12GB / 16GB | — | |
| Storage | 256GB / 512GB | 512GB | |
| OS | Android 16 | Android 11 Red Velvet Cake | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 161.5×73.0×8.0 mm | |
| Weight | 227 g | 188 g | |
| Price | $420 | — |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
ZTE Axon 31 Ultra 5G
- Main: 64MP
- Ultrawide: 64MP
- Telephoto: 8MP
- Front: 44MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
ZTE Axon 31 Ultra 5G
- 6.7" Super Amoled
- Resolution: 1080x2400
- Refresh rate: 144 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- Wireless charging: no data
ZTE Axon 31 Ultra 5G
- 4600 mAh
- No wireless charging
We compared Redmi K90 Ultra and ZTE Axon 31 Ultra 5G, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads ZTE Axon 31 Ultra 5G by 178.6% in our overall performance rating.
ZTE Axon 31 Ultra 5G
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra notably outperforms the ZTE Axon 31 Ultra 5G (92/100 vs 63/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 89/100).
camera
In the "camera" category, the ZTE Axon 31 Ultra 5G significantly outperforms the Redmi K90 Ultra (71/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the ZTE Axon 31 Ultra 5G (92/100 vs 41/100).
portability
In the "portability" category, the ZTE Axon 31 Ultra 5G notably outperforms the Redmi K90 Ultra (67/100 vs 40/100).
Which is better: the Redmi K90 Ultra or the ZTE Axon 31 Ultra 5G?
The Redmi K90 Ultra is noticeably better than the ZTE Axon 31 Ultra 5G — the overall rating gap is 10 points.
What is the rating of the Redmi K90 Ultra and the ZTE Axon 31 Ultra 5G?
The Redmi K90 Ultra has a MobileRank rating of 75/100, the ZTE Axon 31 Ultra 5G — 65/100.
Which has the better camera: the Redmi K90 Ultra or the ZTE Axon 31 Ultra 5G?
The ZTE Axon 31 Ultra 5G leads on camera score (71/100 vs 37/100).
Which is more powerful: the Redmi K90 Ultra or the ZTE Axon 31 Ultra 5G?
The Redmi K90 Ultra leads on performance (92/100 vs 63/100).
Should you choose the Redmi K90 Ultra over the ZTE Axon 31 Ultra 5G?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The ZTE Axon 31 Ultra 5G is a better fit for active users.