Compare phones
| Global Score | |
| 76.1 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 11, 10 |
| 2020-06-29 | 2020-03-23 |
| 6.61 x 3.02 x 0.32 inches | 6.26 x 2.96 x 0.35 inches |
| 6.81 ounces | 6.63 ounces |
| Black | Midnight blue and Raven black |
| Plastic and Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| $ 194.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 1600 x 720 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 270 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 8.4 |
| Performance | |
| Mediatek Helio P35 chipset | Exynos 9611 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| PowerVR GE8320 GPU | Mali-G72 MP3 GPU |
| 9.27 | 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 | |
| 16.00 MP + 13.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.33 inches (1/3.06") 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 |
| 9.35 | 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 | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 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
Galaxy M21 is better than the Samsung Galaxy A21, having an 84.1 score against 76.1. These phones work with Android OS (Operating System), but Galaxy M21 has a more recent 11 version and Samsung Galaxy A21 has Android 10. Galaxy M21's construction is a little lighter but a little thicker than the Samsung Galaxy A21, and both were released only 3 months apart.
The Samsung Galaxy M21's CPU is very similar to Galaxy A21's CPU, and although the Samsung Galaxy M21 has more RAM memory, they both have the same number of cores. The Samsung Galaxy M21 has a more vivid display than Samsung Galaxy A21, because although it has a little smaller display, it also counts with more pixels per inch of display and a way better resolution of 1080 x 2340 pixels.
The Galaxy M21 takes way better pictures and videos than Samsung Galaxy A21, because although it has a smaller aperture which is not nice for taking pictures or video in low light situations, it also counts with a much bigger sensor taking more light and vivid colors, a lot better (4K) video resolution and a back-facing camera with lot more megapixels.
The Samsung Galaxy M21 has a greater memory for apps and games than Galaxy A21, and although they both have a SD card slot that holds a maximum of 512 GB, the Samsung Galaxy M21 also has more internal storage. The Samsung Galaxy M21 counts with a really longer battery performance than Galaxy A21, because it has a 50% larger battery size.
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