Samsung Galaxy S21 Ultra vs Xiaomi Black Shark GS3
Comparing the Samsung Galaxy S21 Ultra (2021) and the Xiaomi Black Shark GS3 (2025) on specs and benchmarks. By overall MobileRank rating, the Samsung Galaxy S21 Ultra leads — 37/100 vs 5/100 (a 32-point difference).
Samsung Galaxy S21 Ultra
Xiaomi Black Shark GS3
- Higher performance (10/100 vs 0/100)
- Better camera (55/100 vs 0/100)
- Longer battery life (40/100 vs 0/100)
- Better display (100/100 vs 0/100)
- Better design/ergonomics (50/100 vs 15/100)
- Better value for money (55/100 vs 27/100)
Comparing the Samsung Galaxy S21 Ultra vs the Xiaomi Black Shark GS3, the Samsung Galaxy S21 Ultra scores 32 points higher (37/100 vs 5/100). In the "performance" category, the Samsung Galaxy S21 Ultra leads (10/100 vs 0/100). In the "camera" category, the Samsung Galaxy S21 Ultra leads (55/100 vs 0/100). In the "battery" category, the Samsung Galaxy S21 Ultra leads (40/100 vs 0/100). In the "value for money" category, the Xiaomi Black Shark GS3 leads (55/100 vs 27/100). In the "performance" category, the Samsung Galaxy S21 Ultra is a bit better (10/100 vs 0/100). In the "display" category, the Samsung Galaxy S21 Ultra significantly outperforms the Xiaomi Black Shark GS3 (100/100 vs 0/100). In the "camera" category, the Samsung Galaxy S21 Ultra significantly outperforms the Xiaomi Black Shark GS3 (55/100 vs 0/100). In the "battery" category, the Samsung Galaxy S21 Ultra significantly outperforms the Xiaomi Black Shark GS3 (40/100 vs 0/100). In the "design" category, the Xiaomi Black Shark GS3 significantly outperforms the Samsung Galaxy S21 Ultra (50/100 vs 15/100). In the "value for money" category, the Xiaomi Black Shark GS3 notably outperforms the Samsung Galaxy S21 Ultra (55/100 vs 27/100).
| Specification | Samsung Galaxy S21 Ultra | Xiaomi Black Shark GS3 | |
|---|---|---|---|
| Processor | Samsung Exynos 2100 | — | |
| AnTuTu | 1074182 | — | |
| Geekbench Single | 1435 | — | |
| Geekbench Multi | 3555 | — | |
| Display | 6.8" AMOLED | 1.4" AMOLED | |
| Resolution | 3200x1440 | 466x466 | |
| Refresh rate | 120 Hz | — | |
| Battery | 5000 mAh | — | |
| Charging | 25W | — | |
| Wireless charging | 15W | 0W | |
| DXOMark (camera) | 117 | — | |
| Main camera | 108 MP | — | |
| Ultrawide | 12 MP | 0 MP | |
| Telephoto | 10 MP | 0 MP | |
| Front camera | 40 MP | — | |
| RAM | 12GB / 16GB | — | |
| Storage | 128GB / 256GB / 512GB | — | |
| OS | Android 11 | — | |
| Brightness (peak) | — | 600 nits | |
| NFC | — | no | |
| Protection | — | IP68 | |
| Weight | 228 g | — | |
| Price | $1199 | — |
Samsung Galaxy S21 Ultra
- Main: 108MP f/1.8
- Ultrawide: 12MP
- Telephoto: 10MP
- Front: 40MP
Xiaomi Black Shark GS3
- Main: —
- Front: —
Samsung Galaxy S21 Ultra
- 6.8" AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Xiaomi Black Shark GS3
- 1.4" AMOLED
- Resolution: 466x466
- Refresh rate: —
Samsung Galaxy S21 Ultra
- 5000 mAh
- Wired: 25W
- Wireless: 15W
Xiaomi Black Shark GS3
- —
- No wireless charging
Xiaomi Black Shark GS3
Price unknownperformance
In the "performance" category, the Samsung Galaxy S21 Ultra is a bit better (10/100 vs 0/100).
display
In the "display" category, the Samsung Galaxy S21 Ultra significantly outperforms the Xiaomi Black Shark GS3 (100/100 vs 0/100).
camera
In the "camera" category, the Samsung Galaxy S21 Ultra significantly outperforms the Xiaomi Black Shark GS3 (55/100 vs 0/100).
battery
In the "battery" category, the Samsung Galaxy S21 Ultra significantly outperforms the Xiaomi Black Shark GS3 (40/100 vs 0/100).
design
In the "design" category, the Xiaomi Black Shark GS3 significantly outperforms the Samsung Galaxy S21 Ultra (50/100 vs 15/100).
value for money
In the "value for money" category, the Xiaomi Black Shark GS3 notably outperforms the Samsung Galaxy S21 Ultra (55/100 vs 27/100).
Which is better: the Samsung Galaxy S21 Ultra or the Xiaomi Black Shark GS3?
The Samsung Galaxy S21 Ultra significantly outperforms the Xiaomi Black Shark GS3 by 32 points (37/100 vs 5/100).
What is the rating of the Samsung Galaxy S21 Ultra and the Xiaomi Black Shark GS3?
The Samsung Galaxy S21 Ultra has a MobileRank rating of 37/100, the Xiaomi Black Shark GS3 — 5/100.
Which has the better camera: the Samsung Galaxy S21 Ultra or the Xiaomi Black Shark GS3?
The Samsung Galaxy S21 Ultra leads on camera score (55/100 vs 0/100).
Which is more powerful: the Samsung Galaxy S21 Ultra or the Xiaomi Black Shark GS3?
The Samsung Galaxy S21 Ultra leads on performance (10/100 vs 0/100).
Should you choose the Samsung Galaxy S21 Ultra over the Xiaomi Black Shark GS3?
The Samsung Galaxy S21 Ultra is a better fit for everyday use. The Xiaomi Black Shark GS3 is a better fit for everyday use.