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 Samsung Galaxy S25 Ultra 256GB: which one suits you?
The two differ in 7 of the specs we have recorded, and the Samsung Galaxy S21 Ultra 256GB is cheaper by SAR 804 (prices checked 4 Nov 2026).
Which one should you choose?
- Paying less: cheaper by SAR 804
- Higher optical zoom (telephoto): 10 x vs 5 x
- Higher wired charging: 45 W vs 25 W
- Higher-resolution main camera (200 MP vs 40 MP)
- Higher years of OS updates: 7 years vs 4 years
The deciding difference here: wired charging and main camera and price.
Compares recorded specs; a missing spec does not mean the feature is absent.
Smartphones · Samsung
Samsung Galaxy S25 Ultra 256GB- Storage:
- 256 GB
- Memory (RAM):
- 12 GB
- Reference price:
- SAR 4,206
Key differences
Display type
AMOLEDDynamic AMOLED 2XProcessor
Exynos 2100Snapdragon 8 EliteWired charging
25 W✓ 45 W
Specifications side by side
21 of 21 specs
Scroll the table sideways to see the rest.
| Spec | | |
|---|---|---|
| Reference price | SAR 3,402 | SAR 4,206 |
| Processor | Exynos 2100 | Snapdragon 8 Elite |
| Wired charging | 25 W | ✓ 45 W |
| Main camera | 40 MP | ✓ 200 MP |
| Years of OS updates | 4 years | ✓ 7 years |
| Storage | 256 GB | 256 GB |
| Memory (RAM) | 12 GB | 12 GB |
| Battery capacity | 5,000 mAh | 5,000 mAh |
| 5G | Yes | Yes |
| Optical zoom (telephoto) | ✓ 10 x | 5 x |
| Screen size | 6.8 in | — |
| Display type | AMOLED | Dynamic AMOLED 2X |
| Resolution | 1440 x 3200 | 1440 x 3200 |
| Screen refresh rate | 120 Hz | 120 Hz |
| Operating system | Android 11.0 | Android |
| Wireless charging | Yes | Yes |
| Dual SIM | Yes | Yes |
| Water and dust rating | IP68 | IP68 |
| Release year | 2021 | — |
| Colour | Black | — |
| Dimensions | 16.5 x 7.6 x 0.9 cm | — |
| Weight | 200 g | — |
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Direct comparison questions
What is the difference in processor between the Samsung Galaxy S21 Ultra 256GB and the Samsung Galaxy S25 Ultra 256GB?
Samsung Galaxy S21 Ultra 256GB: Exynos 2100; Samsung Galaxy S25 Ultra 256GB: Snapdragon 8 Elite. 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 Samsung Galaxy S25 Ultra 256GB?
No difference here: storage is 256 GB on both.
What is the difference in main camera between the Samsung Galaxy S21 Ultra 256GB and the Samsung Galaxy S25 Ultra 256GB?
Main camera is higher on the Samsung Galaxy S25 Ultra 256GB: 200 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 Samsung Galaxy S25 Ultra 256GB?
No difference here: battery capacity is 5,000 mAh on both.