Compare phones
| Global Score | |
| 84.1 | 83.3 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 11, 9.0 Pie |
| 2020-03-23 | 2019-09-29 |
| 6.26 x 2.96 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 6.63 ounces | 6.63 ounces |
| Midnight blue and Raven black | Black, Blue and White |
| Plastic and Plastic | Plastic |
| 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 | 8.1 |
| Performance | |
| Exynos 9611 chipset | Samsung Exynos 9611 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, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Mali-G72 MP3 GPU |
| 9.27 | 9.27 |
| 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 | 48.00 MP + 16.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 26.00mm focal length | 12.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 11.55 | 11.44 |
| 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 | 6000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy M21 is a bit better than the Samsung Galaxy M30s, getting a general score of 84.1 against 83.3. The Galaxy M21 construction has the same thickness and weight than the Samsung Galaxy M30s. These devices come with the same Android 11 operating system. Samsung Galaxy M21 features just a bit better screen than Galaxy M30s. They have the same exact resolution of 1080 x 2340 pixels, a display of the same size and a better pixel number per screen inch.
The Galaxy M30s's storage for apps and games is just as good as Galaxy M21's one, both have an external memory card slot that holds up to 512 GB and the same 64 GB internal storage capacity. Samsung Galaxy M21 and Samsung Galaxy M30s feature very similar CPUs, both have a Octa-Core CPU and 4 GB of RAM.
The Galaxy M30s has a battery duration that's just as good as the battery performance in Galaxy M21. The Galaxy M21 shoots just a bit better photographs and videos than Samsung Galaxy M30s. They have the same video quality, a 48 MP resolution camera, a same size sensor, a F2 camera aperture and the same video frame rates.
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