Compare phones
| Global Score | |
| 79.8 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10, 9.0 Pie | Android 11, 10 |
| 2019-09-20 | 2020-03-23 |
| 6.24 x 2.94 x 0.30 inches | 6.26 x 2.96 x 0.35 inches |
| 5.86 ounces | 6.63 ounces |
| Prism crush black, Prism crush green, Prism crush violet and Prism crush white | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 1560 x 720 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 268 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.2 | 8.4 |
| Performance | |
| Samsung Exynos 7 Octa 7885 chipset | Exynos 9611 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G71 MP2 GPU | Mali-G72 MP3 GPU |
| 8.91 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.14 | 11.74 |
| Camera | |
| 25.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 27.00mm focal length | 26.00mm focal length |
| -- | 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 |
| 9.68 | 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 |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Samsung Galaxy M21 is a bit better than Galaxy A30s, with a general score of 84.1 against 79.8. Despite being the best we are comparing here, Samsung Galaxy M21 is a heavier and somewhat thicker cellphone than the Galaxy A30s. Both phones in our current comparison include the same Android 11 OS (operating system), so you shouldn't notice any differences in that aspect.
Galaxy M21 counts with a bit better performance than Samsung Galaxy A30s. Both have a 4 GB RAM memory and 8 processing cores. Samsung Galaxy M21 features a brighter screen than Samsung Galaxy A30s, and although they both have a screen of the same size, the Samsung Galaxy M21 also has a much higher pixel density and a lot higher 1080 x 2340px resolution.
Galaxy M21 features a better camera than Galaxy A30s, because although it has a smaller aperture, it also counts with a much better 3840x2160 (4K) video quality and a back-facing camera with a lot better 48 MP resolution. The Galaxy A30s counts with a lot bigger memory capacity for applications, games, photos and videos than Galaxy M21, and although they both have a SD memory card expansion slot that allows a maximum of 512 GB, the Galaxy A30s also has 64 GB more internal memory.
The Samsung Galaxy M21 has a much longer battery duration than Samsung Galaxy A30s, because it has 6000mAh of battery capacity instead of 4000mAh.
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