vivo Y 21 256GB vs realme C 100 128GB: which one suits you?
The two differ in 5 of the specs we have recorded, and the realme C 100 128GB is cheaper by SAR 386 (prices checked 12 Nov 2026).
Which one should you choose?
Choose the
vivo Y 21 256GB if you care about:- More space for photos and apps (256 GB vs 128 GB)
Choose the
realme C 100 128GB if you care about:- Paying less: cheaper by SAR 386
- Bigger battery for a longer day (7,000 mAh vs 6,500 mAh) · slight difference
The deciding difference here: storage and price.
Compares recorded specs; a missing spec does not mean the feature is absent.
Key differences
Storage
✓ 256 GB128 GBScreen size
6.68 in6.8 inResolution
1608 x 720720 x 1570
Specifications side by side
16 of 16 specs
Scroll the table sideways to see the rest.
| Spec | | |
|---|---|---|
| Reference price | SAR 930 | SAR 544 |
| Storage | ✓ 256 GB | 128 GB |
| Processor | Dimensity 6300 | — |
| Battery capacity | 6,500 mAh | ✓ 7,000 mAh |
| Wired charging | 44 W | — |
| 5G | Yes | — |
| Memory (RAM) | 4 GB | 4 GB |
| Main camera | 50 MP | 50 MP |
| Screen size | 6.68 in | 6.8 in |
| Display type | — | LCD |
| Resolution | 1608 x 720 | 720 x 1570 |
| Screen refresh rate | 120 Hz | 120 Hz |
| Operating system | Android 16 | Android 16, Realme UI 7.0 |
| Colour | Gold | — |
| Dimensions | 16.6 x 7.6 x 0.8 centimeters cm | — |
| Weight | 199 g | — |
| Release year | 2026 | 2026 |
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Before you buy
Prices, availability, shipping and returns can change. Check the final details on Amazon.sa before you buy.
Similar comparisons
Direct comparison questions
What is the difference in storage between the vivo Y 21 256GB and the realme C 100 128GB?
Storage is higher on the vivo Y 21 256GB: 256 GB vs 128 GB on the realme C 100 128GB. If this spec is your priority, the difference favours it.
What is the difference in main camera between the vivo Y 21 256GB and the realme C 100 128GB?
No difference here: main camera is 50 MP on both.
What is the difference in battery capacity between the vivo Y 21 256GB and the realme C 100 128GB?
Battery capacity is higher on the realme C 100 128GB: 7,000 mAh vs 6,500 mAh on the vivo Y 21 256GB. If this spec is your priority, the difference favours it.
What is the difference in memory (RAM) between the vivo Y 21 256GB and the realme C 100 128GB?
No difference here: memory (RAM) is 4 GB on both.