Compare phones
| Global Score | |
| 81.3 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 11, 10 |
| 2020-04-27 | 2020-03-23 |
| 6.27 x 2.88 x 0.34 inches | 6.26 x 2.96 x 0.35 inches |
| 6.53 ounces | 6.63 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white | Midnight blue and Raven black |
| Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 411 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.4 |
| Performance | |
| MediaTek Helio P65 MT6768 chipset | Exynos 9611 chipset |
| Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G52 MC2 GPU | Mali-G72 MP3 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 11.74 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 10.89 | 11.55 |
| 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, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy M21 is slightly better than the Samsung Galaxy A31, with an 84.1 score against 81.3. Both of these devices have Android operating system, but Galaxy M21 has a newer 11 version while Samsung Galaxy A31 has Android 10 version, so it gives you lots of additional features and better performance. Galaxy M21's body is a little bit heavier and a little thicker than the Samsung Galaxy A31.
Samsung Galaxy M21 counts with a bit sharper display than Galaxy A31, although it has a quite lower 1080 x 2340px resolution and a just a bit less pixels per inch in the display, they both have a display with the same size. The Galaxy M21 has a bit better CPU than Galaxy A31. They have the same number of cores and the same RAM amount.
Galaxy M21 features just a bit better camera than Samsung Galaxy A31, and although they both have a same resolution back camera, a F2 camera aperture and a 0.5 inches sensor, the Galaxy M21 also has a much higher (4K) video quality. The Samsung Galaxy M21 counts with as much storage to install applications and games as Galaxy A31, both have equal 64 GB internal storage and a SD memory slot that supports a maximum of 512 GB.
Galaxy M21 counts with greater battery life than Galaxy A31, because it has 6000mAh of battery capacity.
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