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- Galaxy M21 2021 vs Redmi Note 9 4G
Samsung Galaxy M21 2021 vs Xiaomi Redmi Note 9 4G
What Galaxy M21 2021 does better (10) and where Redmi Note 9 4G wins (6) — every spec side by side.
vs
5.0Display3.1
6.7Camera5.3
6.6Battery7.0
5.0Features4.2
Dimensions
Size comparison
Galaxy M21 2021Redmi Note 9 4G
| Galaxy M21 2021 | Redmi Note 9 4G | Difference | |
|---|---|---|---|
| Height | 159 mm | 162.3 mm | −3.3 mm |
| Width | 75.1 mm | 77.3 mm | −2.2 mm |
| Thickness | 9 mm | 9.6 mm | −0.6 mm |
| Weight | 192 g | 198 g | −6 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy M21 2021 better than Redmi Note 9 4G?
- OLED panelYes · Redmi Note 9 4G: No
- NFCYes · Redmi Note 9 4G: No
- Selfie camera20 MP vs 8 MP2.5×
- Max video4K vs 1080p
- CPU frequency2.3 GHz vs 2 GHz+15%
- Peak brightness420 nits vs 400 nits+5%
- Weight192 g vs 198 g+3%
- Bluetooth5 vs 4.2+19%
- Process10 nm vs 11 nm+10%
- Thickness9 mm vs 9.6 mm+7%
Why is Redmi Note 9 4G better than Galaxy M21 2021?
- Storage (max)128 GB vs 256 GB2×
- Stereo speakersNo · Galaxy M21 2021: Yes
- RAM6 GB vs 8 GB+33%
- Wired charging15 W vs 18 W+20%
- Storage (base)64 GB vs 128 GB2×
- Main camera aperturef/2 vs f/1.8+11%
Specifications
Side by side
| Design | ||
| Weight | 192 g | 198 g |
| Thickness | 9 mm | 9.6 mm |
| Height | 159 mm | 162.3 mm |
| Width | 75.1 mm | 77.3 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Glass protection | — | Corning Gorilla Glass 3 |
| Colours | Charcoal Black, Arctic Blue | Gray, Green, Blue, Orange |
| Display | ||
| Screen size | 6.4″ | 6.5″ |
| Panel | Super AMOLED | IPS LCD |
| OLED panel | Yes | No |
| Resolution (width) | 1,080 px | 1,080 px |
| Resolution (height) | 2,340 px | 2,340 px |
| Pixel density | 403 ppi | 395 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 420 nits | 400 nits |
| Screen-to-body ratio | 84.2% | 83.4% |
| Performance | ||
| Chipset | Exynos 9611 | Qualcomm SM6115 Snapdragon 662 |
| Chip maker | Exynos | Qualcomm |
| Process | 10 nm | 11 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.3 GHz | 2 GHz |
| GPU | Mali-G72 MP3 | Adreno 610 |
| Memory | ||
| RAM | 6 GB | 8 GB |
| Storage (max) | 128 GB | 256 GB |
| Storage (base) | 64 GB | 128 GB |
| Storage type | — | 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 | 1080p |
| 4K video frame rate | 30 fps | — |
| Selfie camera | 20 MP | 8 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 6,000 mAh | 6,000 mAh |
| Battery type | Li-Po | Li-Po |
| Wired charging | 15 W | 18 W |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 5 |
| Bluetooth | 5 | 4.2 |
| 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 |
| Features | ||
| Stereo speakers | No | Yes |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Side |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | Fingerprint (side-mounted), accelerometer, proximity, compass |
| SAR (head) | 0.47 W/kg | — |
| Software | ||
| OS at launch | Android 11 | Android 10 |
| Platform | Android | Android |
| Interface | One UI 3.1 Core | MIUI 14 |
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