Compare phones
| Global Score | |
| 84.1 | 81.9 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | -- |
| 2020-03-23 | 2017-08-11 |
| 6.26 x 2.96 x 0.35 inches | 5.99 x 2.95 x 0.39 inches |
| 6.63 ounces | 7.34 ounces |
| Midnight blue and Raven black | Gold and Gray |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 245.00 |
| 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) and HSDPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 6.6 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1, 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 little bit better than Galaxy S8 Active, with an 84.1 score against 81.9. Galaxy M21 is a extremely newer phone, and it is also a little bit lighter and somewhat thinner than the Galaxy S8 Active. The Samsung Galaxy S8 Active counts with a CPU that's very similar to the CPU in Samsung Galaxy M21, they have 8 CPU cores and a 4 GB RAM memory.
The Samsung Galaxy S8 Active features a little sharper screen than Samsung Galaxy M21, because although it has a little bit smaller screen, it also counts with more pixels per screen inch and a higher resolution of 1440 x 2960px. The Samsung Galaxy M21 has just a bit more storage capacity for applications, games, photos and videos than Galaxy S8 Active, and although they both have equal 64 GB internal memory capacity, the Samsung Galaxy M21 also has an external memory slot that supports a maximum of 512 GB.
The Samsung Galaxy M21 features a superior battery lifetime than Galaxy S8 Active, because it has a 50 percent bigger battery size. The Galaxy M21 has a much better camera than Samsung Galaxy S8 Active, because although it has a tinier aperture, and they both have the same video frame rates and the same 3840x2160 video resolution, the Galaxy M21 also counts with a way bigger camera sensor providing a much higher image quality and a way better 48 megapixels resolution camera in the back.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.