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- Galaxy M21s vs Galaxy M31 Prime
Samsung Galaxy M21s vs Samsung Galaxy M31 Prime
What Galaxy M21s does better (0) and where Galaxy M31 Prime wins (1) — every spec side by side.
vs
5.0Display5.0
7.5Camera7.5
6.6Battery6.6
3.5Features3.5
Dimensions
Size comparison
Galaxy M21sGalaxy M31 Prime
| Galaxy M21s | Galaxy M31 Prime | Difference | |
|---|---|---|---|
| Height | 159.2 mm | 159.2 mm | = |
| Width | 75.1 mm | 75.1 mm | = |
| Thickness | 8.9 mm | 8.9 mm | = |
| Weight | 191 g | 191 g | = |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy M21s better than Galaxy M31 Prime?
Galaxy M21s has no measurable advantages in this pair.
Why is Galaxy M31 Prime better than Galaxy M21s?
- 4K selfie videoNo · Galaxy M21s: Yes
Specifications
Side by side
| Design | ||
| Weight | 191 g | 191 g |
| Thickness | 8.9 mm | 8.9 mm |
| Height | 159.2 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 | Blue, 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 |
| Screen-to-body ratio | 84.1% | 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 |
| Memory | ||
| RAM | 6 GB | 6 GB |
| Storage (max) | 128 GB | 128 GB |
| Storage (base) | 64 GB | 64 GB |
| Storage type | eMMC 5.1 | UFS 2.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 64 MP | 64 MP |
| Main camera aperture | f/1.8 | f/1.8 |
| Main sensor size | 1/1.72" | 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 | 32 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 |
| 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 | No | 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) | 0.48 W/kg | 0.38 W/kg |
| Software | ||
| OS at launch | Android 10 | Android 10 |
| Platform | Android | Android |
| Interface | One UI 2.5 | One UI 2.0 |
