Compare phones
| Global Score | |
| 84.1 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 10 |
| 2020-03-23 | 2020-06-29 |
| 6.26 x 2.96 x 0.35 inches | 6.61 x 3.02 x 0.32 inches |
| 6.63 ounces | 6.81 ounces |
| Midnight blue and Raven black | Black |
| Plastic and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2340 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED | IPS LCD |
| 403 pixels per inch | 270 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 7.3 |
| Performance | |
| Exynos 9611 chipset | Mediatek Helio P35 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Mali-G72 MP3 GPU | PowerVR GE8320 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 9.84 |
| Camera | |
| 48.00 MP + 20.00 MP | 16.00 MP + 13.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | -- |
| 11.55 | 9.35 |
| 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 | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M21 is much better than Galaxy A21, having a score of 84.1 against 76.1. Both phones in this review come with Android OS (operating system), but the Galaxy M21 has newer 11 version and Galaxy A21 has Android 10, so it provides you lots of additional features. Even though the Galaxy M21 and Galaxy A21 were released with only a few months difference, Galaxy M21's design is a bit lighter but also a bit thicker.
Samsung Galaxy M21 counts with a better looking display than Galaxy A21, because although it has a little smaller screen, it also counts with a lot higher resolution of 1080 x 2340px and a greater display pixels density. Samsung Galaxy M21 features a greater memory capacity to install applications and games or saving photos and videos than Samsung Galaxy A21, and although they both have an external memory slot that supports a maximum of 512 GB, the Samsung Galaxy M21 also has 64 GB internal storage capacity.
The Galaxy A21 features a processing unit that is just as good as the Samsung Galaxy M21 one, and although the Galaxy A21 has lesser RAM memory, they both have a Octa-Core processing unit. The Galaxy M21 has a very superior camera than Samsung Galaxy A21, because although it has a tinier camera aperture which is not favorable for low light captures and videos, it also counts with a lot more MP back facing camera, a lot bigger back-facing camera sensor capturing more light and vivid colors and a much better (4K) video definition.
The Samsung Galaxy M21 counts with a superior battery performance than Samsung Galaxy A21, because it has a 6000mAh battery size.
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