Nothing Phone (4a) vs Redmi K90 Ultra
The Nothing Phone (4a) (2026) runs on the Qualcomm Snapdragon 7s Gen 4, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $481 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 62/100 (a 11-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5200); the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 1,148,725); the Nothing Phone (4a) is noticeably lighter (190g vs 227g).
Nothing Phone (4a)
Redmi K90 Ultra
- Lighter: 190g vs 227g
- Better camera (61/100 vs 37/100)
- Better portability (59/100 vs 40/100)
- Higher AnTuTu: 3119308 vs 1148725
- Better Geekbench Single: 3041 vs 1237
- Better Geekbench Multi: 9494 vs 3281
- Bigger battery: 8550 vs 5200 mAh
- Faster charging: 100W vs 50W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper: $420 vs $481
- Higher performance (92/100 vs 62/100)
- Longer battery life (78/100 vs 54/100)
- Better display (94/100 vs 80/100)
Comparing the Nothing Phone (4a) vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 11 points higher (73/100 vs 62/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 62/100). In the "camera" category, the Nothing Phone (4a) leads (61/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 54/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Nothing Phone (4a) (92/100 vs 62/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 80/100). In the "camera" category, the Nothing Phone (4a) notably outperforms the Redmi K90 Ultra (61/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Nothing Phone (4a) (78/100 vs 54/100). In the "portability" category, the Nothing Phone (4a) notably outperforms the Redmi K90 Ultra (59/100 vs 40/100).
| Specification | Nothing Phone (4a) | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 7s Gen 4 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1148725 | 3119308 | |
| Geekbench Single | 1237 | 3041 | |
| Geekbench Multi | 3281 | 9494 | |
| Display | 6.7" AMOLED | 6.8" AMOLED | |
| Resolution | 2412x1080 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 5200 mAh | 8550 mAh | |
| Charging | 50W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 4500 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP64 | IP68/IP69 | |
| Dimensions | 164.0×77.6×8.6 mm | 162.9×77.9×8.2 mm | |
| Weight | 190 g | 227 g | |
| Price | $481 | $420 |
Nothing Phone (4a)
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Nothing Phone (4a)
- 6.7" AMOLED
- Resolution: 2412x1080
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Nothing Phone (4a)
- 5200 mAh
- Wired: 50W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
We compared Nothing Phone (4a) and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Nothing Phone (4a) by 63.2% in our overall performance rating.
Price difference: $61. Redmi K90 Ultra is cheaper by $61.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Nothing Phone (4a) (92/100 vs 62/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 80/100).
camera
In the "camera" category, the Nothing Phone (4a) notably outperforms the Redmi K90 Ultra (61/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Nothing Phone (4a) (78/100 vs 54/100).
portability
In the "portability" category, the Nothing Phone (4a) notably outperforms the Redmi K90 Ultra (59/100 vs 40/100).
Which is better: the Nothing Phone (4a) or the Redmi K90 Ultra?
The Redmi K90 Ultra is noticeably better than the Nothing Phone (4a) — the overall rating gap is 11 points.
What is the rating of the Nothing Phone (4a) and the Redmi K90 Ultra?
The Nothing Phone (4a) has a MobileRank rating of 62/100, the Redmi K90 Ultra — 73/100.
Which has the better camera: the Nothing Phone (4a) or the Redmi K90 Ultra?
The Nothing Phone (4a) leads on camera score (61/100 vs 37/100).
Which is more powerful: the Nothing Phone (4a) or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 62/100).
Should you choose the Nothing Phone (4a) over the Redmi K90 Ultra?
The Nothing Phone (4a) is a better fit for active users. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.