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- Galaxy A51 5G vs Redmi Note 9 5G
Samsung Galaxy A51 5G vs Xiaomi Redmi Note 9 5G
What Galaxy A51 5G does better (9) and where Redmi Note 9 5G wins (8) — every spec side by side.
vs
5.0Display3.6
6.8Camera6.3
2.9Battery4.6
7.1Features6.2
Dimensions
Size comparison
Galaxy A51 5GRedmi Note 9 5G
| Galaxy A51 5G | Redmi Note 9 5G | Difference | |
|---|---|---|---|
| Height | 158.9 mm | 162 mm | −3.1 mm |
| Width | 73.6 mm | 77.3 mm | −3.7 mm |
| Thickness | 8.7 mm | 9.2 mm | −0.5 mm |
| Weight | 187 g | 199 g | −12 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy A51 5G better than Redmi Note 9 5G?
- OLED panelYes · Redmi Note 9 5G: No
- NFCYes · Redmi Note 9 5G: No
- Selfie camera32 MP vs 13 MP2.5×
- Storage (base)128 GB vs 64 GB2×
- 4K selfie videoYes · Redmi Note 9 5G: No
- Weight187 g vs 199 g+6%
- Pixel density405 ppi vs 395 ppi+3%
- Thickness8.7 mm vs 9.2 mm+6%
- Screen-to-body ratio87.2% vs 83.6%+4%
Why is Redmi Note 9 5G better than Galaxy A51 5G?
- Storage (max)128 GB vs 256 GB2×
- Stereo speakersNo · Galaxy A51 5G: Yes
- Battery capacity4,500 mAh vs 5,000 mAh+11%
- Wired charging15 W vs 18 W+20%
- Peak brightness400 nits vs 450 nits+12%
- CPU frequency2.2 GHz vs 2.4 GHz+9%
- Process8 nm vs 7 nm+14%
- Main camera aperturef/2 vs f/1.8+11%
Specifications
Side by side
| Design | ||
| Weight | 187 g | 199 g |
| Thickness | 8.7 mm | 9.2 mm |
| Height | 158.9 mm | 162 mm |
| Width | 73.6 mm | 77.3 mm |
| Frame | Aluminium | — |
| Back | Plastic | Plastic |
| Glass protection | Corning Gorilla Glass 3 | Corning Gorilla Glass 5 |
| Colours | Prism Cube Black, Prism Cube White, Prism Cube Pink | Gray, Green, Violet |
| Display | ||
| Screen size | 6.5″ | 6.5″ |
| Panel | Super AMOLED | IPS LCD |
| OLED panel | Yes | No |
| Resolution (width) | 1,080 px | 1,080 px |
| Resolution (height) | 2,400 px | 2,340 px |
| Pixel density | 405 ppi | 395 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 400 nits | 450 nits |
| Measured brightness | 642 nits | — |
| Screen-to-body ratio | 87.2% | 83.6% |
| Performance | ||
| Chipset | Exynos 980 | Mediatek Dimensity 800U |
| Chip maker | Exynos | MediaTek |
| Process | 8 nm | 7 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.2 GHz | 2.4 GHz |
| GPU | Mali-G76 MP5 | Mali-G57 MC3 |
| AnTuTu score | 316,007 | — |
| Geekbench 6 (multi-core) | 1,867 | — |
| Memory | ||
| RAM | 8 GB | 8 GB |
| Storage (max) | 128 GB | 256 GB |
| Storage (base) | 128 GB | 64 GB |
| Storage type | UFS 2.1 | UFS 2.2 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 48 MP | 48 MP |
| Main camera aperture | f/2 | f/1.8 |
| Main sensor size | 1/2.0" | 1/2.0" |
| Rear cameras | 2 | 2 |
| Optical stabilisation | No | No |
| Ultra-wide camera | Yes | Yes |
| Telephoto camera | No | No |
| Max video | 4K | 4K |
| 4K video frame rate | 30 fps | 30 fps |
| Selfie camera | 32 MP | 13 MP |
| 4K selfie video | Yes | No |
| Battery | ||
| Battery capacity | 4,500 mAh | 5,000 mAh |
| Battery type | Li-Po | Li-Po |
| Wired charging | 15 W | 18 W |
| Charged in 30 min | 30% | — |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | Yes | Yes |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 5 |
| Bluetooth | 5 | 5.1 |
| NFC | Yes | No |
| USB | USB Type-C 2.0 | USB Type-C 2.0 |
| USB version | 2 | 2 |
| Satellite navigation | GLONASS, GALILEO, BDS | GLONASS, GALILEO, BDS, QZSS |
| Features | ||
| Stereo speakers | No | Yes |
| 3.5 mm headphone jack | Yes | Yes |
| Loudspeaker loudness | -29.5 LUFS | — |
| Fingerprint sensor | Under display | Side |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass |
| SAR (head) | 0.5 W/kg | — |
| Software | ||
| OS at launch | Android 10 | Android 10 |
| Platform | Android | Android |
| Interface | One UI 5 | MIUI 12 |
