Compare phones
| Global Score | |
| 91.8 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 11, 10 |
| 2021-01-29 | 2020-03-23 |
| 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 | Midnight blue and Raven black |
| Aluminum and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | 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 | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.2 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | 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 + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm 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 | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 10.78 | 11.55 |
| 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 Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy S21 is a bit better than Samsung Galaxy M21, getting a 91.8 score against 84.1. The Galaxy S21 is a newer cellphone, and it is also a bit lighter and thinner than Samsung Galaxy M21. Both phones in this comparison review use the same Android 11 OS (operating system), so you shouldn't notice any differences regarding OS features.
Galaxy S21 features a little bit better screen than Galaxy M21, because although it has a bit smaller screen, it also counts with a little bit better display density, a little higher 1080 x 2400 resolution and a really brighter screen. Samsung Galaxy M21 features more storage capacity for apps and games than Galaxy S21, because although it has less internal storage, it also counts with a slot for external memory cards that holds a maximum of 512 GB.
The Samsung Galaxy S21 counts with a bit better processing power than Samsung Galaxy M21, and although they both have 8 processing cores, the Samsung Galaxy S21 also has a larger amount of RAM. The Galaxy M21 has a bit better camera than Galaxy S21, because although it has a tinier sensor taking lower quality photos and videos and a smaller aperture, and they both have the same 3840x2160 video quality, the Galaxy M21 also counts with a much better 48 MP resolution back facing camera and faster 30 frames per second video frame rate.
Samsung Galaxy M21 features a way better battery life than Samsung Galaxy S21, because it has a 50% bigger battery size.
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