Compare phones
| Global Score | |
| 84.1 | 81.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | -- |
| 2020-03-23 | 2017-04-21 |
| 6.26 x 2.96 x 0.35 inches | 5.86 x 2.68 x 0.31 inches |
| 6.63 ounces | 5.47 ounces |
| Midnight blue and Raven black | Arctic silver, Burgundy red, Coral blue, Maple gold, Midnight black, Orchid gray and Rose pink |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 173.00 |
| Display / Screen | |
| 6.4 inches | 5.8 inches |
| 2340 x 1080 pixels | 2960 x 1440 pixels |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 568 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.9 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 835 MSM8998 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 280, 64-bit, 10 nm (Octa-Core 2350 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Adreno 540 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 11.74 | 10.78 |
| Camera | |
| 48.00 MP + 20.00 MP | 12.00 MP + 8.00 MP |
| f/2.00 aperture | f/1.70 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.39 inches (1/2.55") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 11.55 | 9.79 |
| 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 | 3000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 4.96 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0, EDR |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Galaxy M21 is a bit better than Samsung Galaxy S8, having an 84.1 score against 81.7. Galaxy M21 is a extremely newer device than the Samsung Galaxy S8, although it is somewhat heavier and somewhat thicker. The Galaxy S8 features a processor that's just as good as Galaxy M21's processing unit, they have a Octa-Core processing unit and the same RAM memory amount.
The Samsung Galaxy S8 features a slightly better looking display than Samsung Galaxy M21, because although it has a little smaller display, it also counts with a greater screen pixel density and a higher resolution of 1440 x 2960px. The Samsung Galaxy M21 has a better camera than Galaxy S8, because although it has a tinier aperture, and they both have the same 30 frames per second video frame rates and the same 3840x2160 video resolution, the Samsung Galaxy M21 also counts with a much bigger back camera sensor and a way more megapixels back camera.
Samsung Galaxy M21 features just a bit bigger memory capacity for games and applications than Galaxy S8, and although they both have the same internal storage, the Samsung Galaxy M21 also has a slot for external memory cards that allows up to 512 GB. The Galaxy M21 counts with a very superior battery duration than Galaxy S8, because it has a 6000mAh battery size instead of 3000mAh.
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