Compare phones
| Global Score | |
| 88 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 11, 10 |
| 2020-08-06 | 2020-03-23 |
| 6.27 x 2.93 x 0.37 inches | 6.26 x 2.96 x 0.35 inches |
| 7.16 ounces | 6.63 ounces |
| Mirage black and Mirage blue | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 405 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.4 |
| Performance | |
| Samsung Exynos 9611 chipset | Exynos 9611 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Mali-G72 MP3 GPU |
| 9.36 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.14 | 11.74 |
| Camera | |
| 64.00 MP + 32.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.59 inches (1/1.7") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 12.1 | 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 | |
| 6000mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 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 | FM Radio |
Comparison review
The Galaxy M31s is slightly better than Galaxy M21, with an 88 score against 84.1. Although the Galaxy M31s is a better phone than the Galaxy M21, we must highlight that it is also just a bit heavier and just a little bit thicker. These devices have the same Android 11 operating system. The Galaxy M31s counts with a bit superior processor than Samsung Galaxy M21, and although they both have the same number of cores, the Galaxy M31s also has a larger amount of RAM memory.
Galaxy M21 features a little sharper screen than Samsung Galaxy M31s, although it has a little worse resolution of 1080 x 2340, a just a bit lower display density and a quite smaller display. The Galaxy M31s has a very superior memory for games and applications than Galaxy M21, and although they both have a slot for SD memory cards that supports up to 512 GB, the Galaxy M31s also has 128 GB internal storage capacity.
Samsung Galaxy M31s and Samsung Galaxy M21 have extremely similar battery performance. Samsung Galaxy M31s takes a bit better photos and videos than Samsung Galaxy M21, and although they both have the same 3840x2160 (4K) video definition and the same video frame rates, the Samsung Galaxy M31s also has a larger camera aperture to take better photos and video in poorly lited environments, a bigger back-facing camera sensor taking more light and vivid colors and a lot higher resolution camera.
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