Compare phones
| Global Score | |
| 91.8 | 88 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 11, 10 |
| 2021-01-29 | 2020-08-06 |
| 5.97 x 2.80 x 0.31 inches | 6.27 x 2.93 x 0.37 inches |
| 6.03 ounces | 7.16 ounces |
| Gray, Phantom pink, Violet and White | Mirage black and Mirage blue |
| Aluminum and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 6.5 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 424 pixels per inch | 405 pixels per inch |
| 1300 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.2 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Samsung Exynos 9611 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Mali-G72 MP3 GPU |
| 9.63 | 9.36 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 14.14 |
| Camera | |
| 12.00 MP + 10.00 MP | 64.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.59 inches (1/1.7") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 10.78 | 12.1 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 6000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy S21 is a bit better than the Galaxy M31s, getting a general score of 91.8 against 88. These devices have the same Android 11 OS (operating system), so they should offer very similar OS features. The Galaxy S21 body is somewhat thinner and lighter than the Galaxy M31s, although both were released only a couple of months apart.
The Galaxy S21 counts with a little bit better hardware performance than Samsung Galaxy M31s, and although they both have the same number of cores, the Galaxy S21 also has a greater amount of RAM memory. The Galaxy S21 features a brighter screen than Samsung Galaxy M31s, because although it has a little smaller display, and they both have the same exact 1080 x 2400 resolution, the Galaxy S21 also counts with a little better number of pixels per screen inch.
Samsung Galaxy M31s takes better pictures and videos than Galaxy S21, and although they both have a F1.8 aperture and the same 3840x2160 (4K) video definition, the Samsung Galaxy M31s also has a camera with way more mega-pixels, higher 30 fps video frame rate and a larger sensor capturing better quality photos and videos.
The Samsung Galaxy M31s features a lot bigger storage capacity to install applications and games than Samsung Galaxy S21, and although they both have the same 128 GB internal storage, the Samsung Galaxy M31s also has a slot for an SD memory card that supports a maximum of 512 GB. The Galaxy M31s has a way better battery life than Samsung Galaxy S21, because it has a 6000mAh battery size against 4000mAh.
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