Smartphones · Samsung
Samsung Galaxy S21 Ultra 256GB- Storage:
- 256 GB
- Memory (RAM):
- 12 GB
- Reference price:
- SAR 3,402
Samsung Galaxy S21 Ultra 256GB vs Xiaomi Redmi Note 17 Pro 512GB: which one suits you?
The two differ in 12 of the specs we have recorded (prices checked 7 Nov 2026).
Which one should you choose?
- More memory for multitasking (12 GB vs 8 GB)
- Lower weight: 200 g vs 223 g · slight difference
- More space for photos and apps (512 GB vs 256 GB)
- Bigger battery for a longer day (8,340 mAh vs 5,000 mAh)
- Higher wired charging: 67 W vs 25 W
The deciding difference here: storage and memory (RAM).
Compares recorded specs; a missing spec does not mean the feature is absent.
Smartphones · Xiaomi
Xiaomi Redmi Note 17 Pro 512GB- Storage:
- 512 GB
- Memory (RAM):
- 8 GB
- Reference price:
- SAR 3,439
Key differences
Storage
256 GB✓ 512 GBMemory (RAM)
✓ 12 GB8 GBScreen size
6.8 in6.83 in
Specifications side by side
23 of 23 specs
Scroll the table sideways to see the rest.
| Spec | | |
|---|---|---|
| Reference price | SAR 3,402 | SAR 3,439 |
| Storage | 256 GB | ✓ 512 GB |
| Memory (RAM) | ✓ 12 GB | 8 GB |
| Processor | Exynos 2100 | Snapdragon 6s Gen 4 |
| Battery capacity | 5,000 mAh | ✓ 8,340 mAh |
| Wired charging | 25 W | ✓ 67 W |
| Main camera | 40 MP | ✓ 50 MP |
| 5G | Yes | Yes |
| Years of OS updates | 4 years | 4 years |
| Optical zoom (telephoto) | 10 x | — |
| Front camera | — | 16 MP |
| Screen size | 6.8 in | 6.83 in |
| Resolution | 1440 x 3200 | 1280 x 2772 |
| Screen refresh rate | 120 Hz | — |
| Display type | AMOLED | AMOLED |
| Wireless charging | Yes | — |
| Dual SIM | Yes | — |
| Water and dust rating | IP68 | — |
| Operating system | Android 11.0 | Android 16 |
| Release year | 2021 | 2026 |
| Dimensions | 16.5 x 7.6 x 0.9 cm | 16.35 x 7.83 x 0.86 cm |
| Weight | ✓ 200 g | 223 g |
| Warranty | — | 1 years |
| Colour | Black | Black |
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Direct comparison questions
What is the difference in processor between the Samsung Galaxy S21 Ultra 256GB and the Xiaomi Redmi Note 17 Pro 512GB?
Samsung Galaxy S21 Ultra 256GB: Exynos 2100; Xiaomi Redmi Note 17 Pro 512GB: Snapdragon 6s Gen 4. This is a spec difference, not a verdict that one is better overall.
What is the difference in storage between the Samsung Galaxy S21 Ultra 256GB and the Xiaomi Redmi Note 17 Pro 512GB?
Storage is higher on the Xiaomi Redmi Note 17 Pro 512GB: 512 GB vs 256 GB on the Samsung Galaxy S21 Ultra 256GB. If this spec is your priority, the difference favours it.
What is the difference in main camera between the Samsung Galaxy S21 Ultra 256GB and the Xiaomi Redmi Note 17 Pro 512GB?
Main camera is higher on the Xiaomi Redmi Note 17 Pro 512GB: 50 MP vs 40 MP on the Samsung Galaxy S21 Ultra 256GB. If this spec is your priority, the difference favours it.
What is the difference in battery capacity between the Samsung Galaxy S21 Ultra 256GB and the Xiaomi Redmi Note 17 Pro 512GB?
Battery capacity is higher on the Xiaomi Redmi Note 17 Pro 512GB: 8,340 mAh vs 5,000 mAh on the Samsung Galaxy S21 Ultra 256GB. If this spec is your priority, the difference favours it.