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- Galaxy M21 vs Galaxy M31 Prime
Samsung Galaxy M21 vs Samsung Galaxy M31 Prime
What Galaxy M21 does better (1) and where Galaxy M31 Prime wins (4) — every spec side by side.
vs
5.0Display5.0
6.7Camera7.5
6.6Battery6.6
5.0Features3.5
Dimensions
Size comparison
Galaxy M21Galaxy M31 Prime
| Galaxy M21 | Galaxy M31 Prime | Difference | |
|---|---|---|---|
| Height | 159 mm | 159.2 mm | −0.2 mm |
| Width | 75.1 mm | 75.1 mm | = |
| Thickness | 8.9 mm | 8.9 mm | = |
| Weight | 188 g | 191 g | −3 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy M21 better than Galaxy M31 Prime?
- NFCYes · Galaxy M31 Prime: No
Why is Galaxy M31 Prime better than Galaxy M21?
- Main camera48 MP vs 64 MP+33%
- 4K selfie videoNo · Galaxy M21: Yes
- Selfie camera20 MP vs 32 MP+60%
- Main camera aperturef/2 vs f/1.8+11%
Specifications
Side by side
| Design | ||
| Weight | 188 g | 191 g |
| Thickness | 8.9 mm | 8.9 mm |
| Height | 159 mm | 159.2 mm |
| Width | 75.1 mm | 75.1 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Glass protection | Corning Gorilla Glass 3 | Corning Gorilla Glass 3 |
| Colours | Midnight Blue, Raven Black | Ocean Blue, Space Black, Iceberg Blue |
| Display | ||
| Screen size | 6.4″ | 6.4″ |
| Panel | Super AMOLED | Super AMOLED |
| OLED panel | Yes | Yes |
| Resolution (width) | 1,080 px | 1,080 px |
| Resolution (height) | 2,340 px | 2,340 px |
| Pixel density | 403 ppi | 403 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 420 nits | 420 nits |
| Measured brightness | 608 nits | — |
| Screen-to-body ratio | 84.2% | 84.1% |
| Performance | ||
| Chipset | Exynos 9611 | Exynos 9611 |
| Chip maker | Exynos | Exynos |
| Process | 10 nm | 10 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.3 GHz | 2.3 GHz |
| GPU | Mali-G72 MP3 | Mali-G72 MP3 |
| AnTuTu score | 355,351 | — |
| Geekbench 6 (multi-core) | 1,139 | — |
| Memory | ||
| RAM | 6 GB | 6 GB |
| Storage (max) | 128 GB | 128 GB |
| Storage (base) | 64 GB | 64 GB |
| Storage type | UFS 2.1 | UFS 2.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 48 MP | 64 MP |
| Main camera aperture | f/2 | f/1.8 |
| Main sensor size | 1/2.0" | 1/1.72" |
| 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 | 20 MP | 32 MP |
| 4K selfie video | No | Yes |
| Battery | ||
| Battery capacity | 6,000 mAh | 6,000 mAh |
| Battery type | Li-Po | Li-Po |
| Wired charging | 15 W | 15 W |
| Charged in 30 min | 25% | — |
| 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 | 5 |
| 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 | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Rear |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | Fingerprint (rear-mounted), accelerometer, gyro, compass |
| SAR (head) | 0.47 W/kg | 0.38 W/kg |
| Software | ||
| OS at launch | Android 10 | Android 10 |
| Platform | Android | Android |
| Interface | One UI 3.1 Core | One UI 2.0 |
