realme RMX 3780 256GB vs Tecno spark go3 128GB: which one suits you?
The two differ in 9 of the specs we have recorded, and the Tecno spark go3 128GB is cheaper by SAR 272 (prices checked 12 Nov 2026).
Which one should you choose?
Choose the
realme RMX 3780 256GB if you care about:- More space for photos and apps (256 GB vs 128 GB)
- Higher-resolution main camera (100 MP vs 13 MP)
Choose the
Tecno spark go3 128GB if you care about:- Paying less: cheaper by SAR 272
- More memory for multitasking (128 GB vs 8 GB)
The deciding difference here: storage and memory (RAM) and price.
Compares recorded specs; a missing spec does not mean the feature is absent.
Key differences
Storage
✓ 256 GB128 GBMemory (RAM)
8 GB✓ 128 GBScreen size
6.72 in6.74 in
Specifications side by side
18 of 18 specs
Scroll the table sideways to see the rest.
| Spec | | |
|---|---|---|
| Reference price | SAR 781 | SAR 509 |
| Storage | ✓ 256 GB | 128 GB |
| Memory (RAM) | 8 GB | ✓ 128 GB |
| Wired charging | — | 15 W |
| Main camera | ✓ 100 MP | 13 MP |
| 5G | Yes | — |
| Battery capacity | 5,000 mAh | 5,000 mAh |
| Screen size | 6.72 in | 6.74 in |
| Display type | LCD | AMOLED |
| Resolution | 1080 x 2400 | 720 x 1600 |
| Screen refresh rate | 120 Hz | 120 Hz |
| Wireless charging | — | No |
| Water and dust rating | — | IP64 |
| Operating system | Android 13.0 | Android 14 |
| Release year | 2023 | 2025 |
| Colour | — | Gray |
| Dimensions | — | 16.8 x 7.8 x 0.8 centimeters cm |
| Weight | 190 g | 183 g |
| Warranty | 2 years | 2 years |
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Before you buy
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Direct comparison questions
What is the difference in storage between the realme RMX 3780 256GB and the Tecno spark go3 128GB?
Storage is higher on the realme RMX 3780 256GB: 256 GB vs 128 GB on the Tecno spark go3 128GB. If this spec is your priority, the difference favours it.
What is the difference in main camera between the realme RMX 3780 256GB and the Tecno spark go3 128GB?
Main camera is higher on the realme RMX 3780 256GB: 100 MP vs 13 MP on the Tecno spark go3 128GB. If this spec is your priority, the difference favours it.
What is the difference in battery capacity between the realme RMX 3780 256GB and the Tecno spark go3 128GB?
No difference here: battery capacity is 5,000 mAh on both.
What is the difference in memory (RAM) between the realme RMX 3780 256GB and the Tecno spark go3 128GB?
Memory (RAM) is higher on the Tecno spark go3 128GB: 128 GB vs 8 GB on the realme RMX 3780 256GB. If this spec is your priority, the difference favours it.