Redmi K90 Pro Max vs Samsung Galaxy A21s
The Redmi K90 Pro Max (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Samsung Galaxy A21s (2020) runs on the Exynos 850; estimated prices are $561 and $215. By overall MobileRank rating, the Redmi K90 Pro Max leads — 84/100 vs 19/100 (a 65-point difference). Key differences: the Redmi K90 Pro Max has the bigger battery (7560 mAh vs 5000); the main camera is 50 MP vs 48 MP; the Redmi K90 Pro Max is faster in AnTuTu (4,119,955 vs 234,339); the Samsung Galaxy A21s is noticeably lighter (192g vs 210g).
Redmi K90 Pro Max
Samsung Galaxy A21s
- Higher AnTuTu: 4119955 vs 234339
- Better Geekbench Single: 3640 vs 300
- Better Geekbench Multi: 11033 vs 836
- Bigger battery: 7560 vs 5000 mAh
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 120Hz vs 60Hz
- Higher performance (94/100 vs 0/100)
- Better camera (74/100 vs 25/100)
- Longer battery life (82/100 vs 36/100)
- Better display (100/100 vs 0/100)
- Lighter: 192g vs 210g
- Cheaper: $215 vs $561
- Better design/ergonomics (60/100 vs 37/100)
- Better value for money (95/100 vs 71/100)
Comparing the Redmi K90 Pro Max vs the Samsung Galaxy A21s, the Redmi K90 Pro Max scores 65 points higher (84/100 vs 19/100). In the "performance" category, the Redmi K90 Pro Max leads (94/100 vs 0/100). In the "camera" category, the Redmi K90 Pro Max leads (74/100 vs 25/100). In the "battery" category, the Redmi K90 Pro Max leads (82/100 vs 36/100). In the "value for money" category, the Samsung Galaxy A21s leads (95/100 vs 71/100). In the "performance" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A21s (94/100 vs 0/100). In the "display" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A21s (100/100 vs 0/100). In the "camera" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A21s (74/100 vs 25/100). In the "battery" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A21s (82/100 vs 36/100). In the "design" category, the Samsung Galaxy A21s notably outperforms the Redmi K90 Pro Max (60/100 vs 37/100). In the "value for money" category, the Samsung Galaxy A21s notably outperforms the Redmi K90 Pro Max (95/100 vs 71/100).
| Specification | Redmi K90 Pro Max | Samsung Galaxy A21s | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Exynos 850 | |
| AnTuTu | 4119955 | 234339 | |
| Geekbench Single | 3640 | 300 | |
| Geekbench Multi | 11033 | 836 | |
| Display | 6.9" OLED | 6.5" IPS LCD | |
| Resolution | 2608x1200 | — | |
| Refresh rate | 120 Hz | 60 Hz | |
| Battery | 7560 mAh | 5000 mAh | |
| Charging | 100W | — | |
| Wireless charging | 50W | 0W | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 50 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 13 MP | |
| RAM | 16GB | 3GB / 4GB / 6GB | |
| Storage | 256GB / 512GB / 1TB | 32GB / 64GB | |
| OS | Android 16 | — | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | — | |
| Dimensions | 163.3×77.8×7.9 mm | 163.7×75.3×8.9 mm | |
| Weight | 210 g | 192 g | |
| Price | $561 | $215 |
Redmi K90 Pro Max
- Main: 50MP f/f/1.88
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Samsung Galaxy A21s
- Main: 48MP
- Front: 13MP
Redmi K90 Pro Max
- 6.9" OLED
- Resolution: 2608x1200
- Refresh rate: 120 Hz
Samsung Galaxy A21s
- 6.5" IPS LCD
- Refresh rate: 60 Hz
Redmi K90 Pro Max
- 7560 mAh
- Wired: 100W
- Wireless: 50W
Samsung Galaxy A21s
- 5000 mAh
- No wireless charging
We compared Redmi K90 Pro Max and Samsung Galaxy A21s, covering their specs and all relevant benchmarks.
Redmi K90 Pro Max leads Samsung Galaxy A21s by 1658.1% in our overall performance rating.
Price difference: $346. Samsung Galaxy A21s is cheaper by $346.
performance
In the "performance" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A21s (94/100 vs 0/100).
display
In the "display" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A21s (100/100 vs 0/100).
camera
In the "camera" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A21s (74/100 vs 25/100).
battery
In the "battery" category, the Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A21s (82/100 vs 36/100).
design
In the "design" category, the Samsung Galaxy A21s notably outperforms the Redmi K90 Pro Max (60/100 vs 37/100).
value for money
In the "value for money" category, the Samsung Galaxy A21s notably outperforms the Redmi K90 Pro Max (95/100 vs 71/100).
Which is better: the Redmi K90 Pro Max or the Samsung Galaxy A21s?
The Redmi K90 Pro Max significantly outperforms the Samsung Galaxy A21s by 65 points (84/100 vs 19/100).
What is the rating of the Redmi K90 Pro Max and the Samsung Galaxy A21s?
The Redmi K90 Pro Max has a MobileRank rating of 84/100, the Samsung Galaxy A21s — 19/100.
Which has the better camera: the Redmi K90 Pro Max or the Samsung Galaxy A21s?
The Redmi K90 Pro Max leads on camera score (74/100 vs 25/100).
Which is more powerful: the Redmi K90 Pro Max or the Samsung Galaxy A21s?
The Redmi K90 Pro Max leads on performance (94/100 vs 0/100).
Should you choose the Redmi K90 Pro Max over the Samsung Galaxy A21s?
The Redmi K90 Pro Max is a better fit for gamers and power users, those who care about battery life. The Samsung Galaxy A21s is a better fit for budget-conscious buyers.