Redmi K90 Ultra vs ZTE S30
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the ZTE S30 (2021) runs on the Qualcomm Snapdragon 720G. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 42/100 (a 31-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4000); the main camera is 50 MP vs 64 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 514,398); the Redmi K90 Ultra has NFC for contactless payments, the ZTE S30 doesn't; the ZTE S30 is noticeably lighter (184g vs 227g).
Redmi K90 Ultra
ZTE S30
- Higher AnTuTu: 3119308 vs 514398
- Better Geekbench Single: 3041 vs 746
- Better Geekbench Multi: 9494 vs 1762
- Bigger battery: 8550 vs 4000 mAh
- Faster charging: 100W vs 30W
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 41/100)
- Longer battery life (78/100 vs 24/100)
- Better display (94/100 vs 54/100)
- Better main camera: 64MP vs 50MP
- Lighter: 184g vs 227g
- Better camera (43/100 vs 37/100)
- Better portability (70/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the ZTE S30, the Redmi K90 Ultra scores 31 points higher (73/100 vs 42/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 41/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 24/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the ZTE S30 (92/100 vs 41/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the ZTE S30 (94/100 vs 54/100). In the "camera" category, the ZTE S30 is a bit better (43/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the ZTE S30 (78/100 vs 24/100). In the "portability" category, the ZTE S30 significantly outperforms the Redmi K90 Ultra (70/100 vs 40/100).
| Specification | Redmi K90 Ultra | ZTE S30 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 720G | |
| AnTuTu | 3119308 | 514398 | |
| Geekbench Single | 3041 | 746 | |
| Geekbench Multi | 9494 | 1762 | |
| Display | 6.8" AMOLED | 6.7" IPS LCD | |
| Resolution | 1280x2772 | 1080x2400 | |
| Refresh rate | 165 Hz | 90 Hz | |
| Battery | 8550 mAh | 4000 mAh | |
| Charging | 100W | 30W | |
| Main camera | 50 MP | 64 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Front camera | 20 MP | 16 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | Android 11, MyOS 11 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 164.8×76.4×7.9 mm | |
| Weight | 227 g | 184 g | |
| Launch price | $420 | — |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
ZTE S30
- Main: 64MP f/f/1.8
- Ultrawide: 8MP
- Front: 16MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
ZTE S30
- 6.7" IPS LCD
- Resolution: 1080x2400
- Refresh rate: 90 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
ZTE S30
- 4000 mAh
- Wired: 30W
- No wireless charging
We compared Redmi K90 Ultra and ZTE S30, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads ZTE S30 by 506.4% in our overall performance rating.
ZTE S30
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the ZTE S30 (92/100 vs 41/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the ZTE S30 (94/100 vs 54/100).
camera
In the "camera" category, the ZTE S30 is a bit better (43/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the ZTE S30 (78/100 vs 24/100).
portability
In the "portability" category, the ZTE S30 significantly outperforms the Redmi K90 Ultra (70/100 vs 40/100).
Which is better: the Redmi K90 Ultra or the ZTE S30?
The Redmi K90 Ultra significantly outperforms the ZTE S30 by 31 points (73/100 vs 42/100).
What is the rating of the Redmi K90 Ultra and the ZTE S30?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the ZTE S30 — 42/100.
Which has the better camera: the Redmi K90 Ultra or the ZTE S30?
The ZTE S30 leads on camera score (43/100 vs 37/100).
Which is more powerful: the Redmi K90 Ultra or the ZTE S30?
The Redmi K90 Ultra leads on performance (92/100 vs 41/100).
Should you choose the Redmi K90 Ultra over the ZTE S30?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The ZTE S30 is a better fit for everyday use.