Compare phones
| Global Score | |
| 84.1 | 79.6 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | -- |
| 2020-03-23 | 2019-03-02 |
| 6.26 x 2.96 x 0.35 inches | 6.24 x 2.94 x 0.30 inches |
| 6.63 ounces | 5.82 ounces |
| Midnight blue and Raven black | Black, Blue and White |
| Plastic and Plastic | Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 403 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8 |
| Performance | |
| Exynos 9611 chipset | Samsung Exynos 7 Octa 7904 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Mali-G71 MP2 GPU |
| 9.27 | 8.91 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 11.74 |
| Camera | |
| 48.00 MP + 20.00 MP | 16.00 MP + 16.00 MP |
| f/2.00 aperture | f/1.70 aperture |
| 26.00mm focal length | 27.00mm focal length |
| 0.5 inches (1/2") sensor | 0.36 inches (1/2.8") 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 | 9.46 |
| 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 | |
| 6000mAh Li - Polymer Battery | 4000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| 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 Samsung Galaxy M21 has a global score of 84.1, which is a bit better than the Galaxy A30's 79.6 global score. Samsung Galaxy M21's body is newer than Galaxy A30's, but it's somewhat thicker and somewhat heavier. The Samsung Galaxy M21 has a bit better processing unit than Galaxy A30. Both of them have a Octa-Core processor and 4 GB of RAM.
Galaxy M21 features a bit more vivid screen than Galaxy A30. They have the same quantity of pixels in each inch in the screen, a display of the same size and an equal 1080 x 2340 resolution. The Galaxy A30 and Samsung Galaxy M21 count with quite similar storage capacity to install applications and games or saving photos and videos, both of them have exactly the same internal memory and a SD card slot that allows a maximum of 512 GB.
Galaxy M21 counts with a lot better camera than Samsung Galaxy A30, because although it has a tinier camera aperture which is not good for taking photographs or videos in low light environments, it also counts with a back facing camera with much more mega-pixels, a lot higher 3840x2160 (4K) video definition and a way larger back-facing camera sensor which gives a way better image and video quality.
The Galaxy M21 features a really longer battery life than Samsung Galaxy A30, because it has a 6000mAh battery size against 4000mAh.
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