Compare phones
| Global Score | |
| 91.8 | 83.3 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 11, 9.0 Pie |
| 2021-01-29 | 2019-09-29 |
| 5.97 x 2.80 x 0.31 inches | 6.26 x 2.96 x 0.35 inches |
| 6.03 ounces | 6.63 ounces |
| Gray, Phantom pink, Violet and White | Black, Blue and White |
| Aluminum and Plastic | Plastic |
| Scratch-Resistant Glass | -- |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 424 pixels per inch | 403 pixels per inch |
| 1300 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.2 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Samsung Exynos 9611 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G72 MP3 GPU |
| 9.63 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 12.00 MP + 10.00 MP | 48.00 MP + 16.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 12.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 10.78 | 11.44 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, 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 |
| 10.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 6000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Samsung Galaxy S21 has a score of 91.8, which is better than Galaxy M30s's global score of 83.3. Samsung Galaxy S21's body is newer, somewhat thinner and a little bit lighter than Galaxy M30s. These devices work with the same Android 11 operating system. Samsung Galaxy S21 counts with a little faster processor than Galaxy M30s, and although they both have the same number of cores, the Samsung Galaxy S21 also has more RAM memory.
The Galaxy S21 counts with a brighter display than Galaxy M30s, because although it has a bit smaller display, it also counts with a little bit greater quantity of pixels in each inch in the screen and a bit higher resolution of 1080 x 2400 pixels. The Galaxy M30s counts with more memory capacity for applications, games, photos and videos than Galaxy S21, because although it has 0 less internal storage, it also counts with a SD extension slot that admits up to 512 GB.
Galaxy M30s features a very superior battery performance than Galaxy S21, because it has 6000mAh of battery capacity instead of 4000mAh. The Samsung Galaxy M30s counts with a slightly better camera than Samsung Galaxy S21, because although it has a smaller back-facing camera sensor offering a lower image quality and a tinier camera aperture which is not recommended for capturing pictures or videos in low light situations, and they both have the same 3840x2160 video resolution, the Samsung Galaxy M30s also counts with a much higher resolution camera in the back and faster 30 fps video frame rate.
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