Compare phones
| Global Score | |
| 86.5 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 10 |
| 2020-03-05 | 2020-06-29 |
| 6.27 x 2.96 x 0.35 inches | 6.61 x 3.02 x 0.32 inches |
| 6.74 ounces | 6.81 ounces |
| Black, Blue and Red | Black |
| Plastic and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2340 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED | IPS LCD |
| 403 pixels per inch | 270 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 7.3 |
| Performance | |
| Exynos 9611 chipset | Mediatek Helio P35 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Mali-G72 MP3 GPU | PowerVR GE8320 GPU |
| 9.36 | 9.27 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 9.84 |
| Camera | |
| 64.00 MP + 32.00 MP | 16.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.59 inches (1/1.7") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | -- |
| 12.1 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M31 has a global score of 86.5, which is better than Galaxy A21's 76.1 general score. Even though Galaxy M31 and the Galaxy A21 were released only 4 months apart, Galaxy M31's design is just a bit lighter but a bit thicker. Both phones we are comparing here have Android OS, but Galaxy M31 has a newer 11 version and Galaxy A21 has Android 10 version.
Samsung Galaxy M31 features a little bit better processing power than Galaxy A21, and although they both have the same number of cores, the Samsung Galaxy M31 also has 3 GB more RAM memory. Samsung Galaxy M31 features a much better looking screen than Samsung Galaxy A21, because although it has a little bit smaller screen, it also counts with a higher amount of pixels per inch of display and a way better 1080 x 2340 resolution.
The Galaxy M31 shoots a lot better videos and photos than Galaxy A21, and although they both have a F1.8 camera aperture, the Galaxy M31 also has a lot larger camera sensor, a much higher 64 megapixels resolution camera and a much better 3840x2160 (4K) video definition. Galaxy M31 has a bigger storage for apps and games than Samsung Galaxy A21, and although they both have a slot for an external memory card that allows a maximum of 512 GB, the Galaxy M31 also has 64 GB internal memory capacity.
Samsung Galaxy M31 features a way better battery lifetime than Galaxy A21, because it has a 50 percent larger battery size.
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