Samsung Galaxy S21 Ultra 256GB vs Xiaomi 12 256GB
10 recorded spec differences. Samsung Galaxy S21 Ultra 256GB is currently the cheaper of the two on Amazon.sa (SAR 3,402 vs SAR 3,524, checked 2 Nov 2026).
Specifications side by side
| Spec | Samsung Galaxy S21 Ultra 256GB | Xiaomi 12 256GB |
|---|---|---|
| Key comparison points | ||
| Processor | Exynos 2100 | Snapdragon 8 Gen 1 |
| Battery capacity | 5,000 mAh | 4,500 mAh |
| Wired charging | 25 W | 67 W |
| Main camera | 40 MP | 50 MP |
| Years of OS updates | 4 years | — |
| Storage | 256 GB | 256 GB |
| Memory (RAM) | 12 GB | 12 GB |
| 5G | Yes | Yes |
| Camera | ||
| Optical zoom (telephoto) | 10 x | — |
| Front camera | — | 32 MP |
| Screen | ||
| Screen size | 6.8 in | 6.28 in |
| Resolution | 1440 x 3200 | 2400 x 1080 |
| Display type | AMOLED | AMOLED |
| Screen refresh rate | 120 Hz | 120 Hz |
| Charging and connectivity | ||
| Water and dust rating | IP68 | — |
| Operating system | Android 11.0 | Android 12.0 |
| Wireless charging | Yes | Yes |
| Dual SIM | Yes | Yes |
| Design and warranty | ||
| Release year | 2021 | 2022 |
| Colour | Black | Grey |
| Dimensions | 16.5 x 7.6 x 0.9 cm | — |
| Weight | 200 g | 180 g |
| Warranty | — | 2 years |
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