Compare phones
| Global Score | |
| 77.7 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 11, 10 |
| 2020-06-19 | 2020-03-23 |
| 6.44 x 2.96 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 6.77 ounces | 6.63 ounces |
| Black, Blue, Red and White | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 1600 x 720 pixels | 2340 x 1080 pixels |
| TFT | Super AMOLED |
| 270 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.2 | 8.4 |
| Performance | |
| Samsung Exynos 850 chipset | Exynos 9611 chipset |
| Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Mali-G76 GPU | Mali-G72 MP3 GPU |
| 9.09 | 9.27 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 9.84 | 11.74 |
| Camera | |
| 48.00 MP + 13.00 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 |
| 10.78 | 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, Gyroscope and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy M21 is a little bit better than the Galaxy A21s, getting a general score of 84.1 against 77.7. Galaxy M21 is a just a bit lighter phone than the Galaxy A21s, but both of them have the same thickness. Both of these phones have Android OS, but Galaxy M21 has a more recent 11 version and Galaxy A21s has Android 10, giving lots of additional features.
Galaxy M21 counts with a bit more powerful CPU than Galaxy A21s, and although they both have a Octa-Core processor, the Galaxy M21 also has a greater amount of RAM memory. Galaxy M21 counts with a sharper screen than Galaxy A21s, because although it has a little smaller display, it also counts with a higher pixel number in each display inch and a lot better resolution of 1080 x 2340 pixels.
Samsung Galaxy M21 has a bit better camera than Galaxy A21s, and although they both have the same sensor size, a 48 mega pixels resolution back facing camera and the same camera aperture, the Samsung Galaxy M21 also has a lot higher (4K) video definition. The Galaxy M21 features a better memory capacity to install applications and games than Samsung Galaxy A21s, and although they both have a slot for external memory cards that holds a maximum of 512 GB, the Galaxy M21 also has 64 GB internal memory capacity.
The Galaxy M21 counts with improved battery performance than Galaxy A21s, because it has a 20 percent larger battery size.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.