Compare phones
| Global Score | |
| 84.1 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 11 |
| 2020-03-23 | 2021-01-29 |
| 6.26 x 2.96 x 0.35 inches | 5.97 x 2.80 x 0.31 inches |
| 6.63 ounces | 6.03 ounces |
| Midnight blue and Raven black | Gray, Phantom pink, Violet and White |
| Plastic and Plastic | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6.4 inches | 6.2 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 403 pixels per inch | 424 pixels per inch |
| 420 cd/m2 brightness | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 9.2 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 888 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 20.00 MP | 12.00 MP + 10.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.55 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy S21 is just a bit better than the Galaxy M21, having a 91.8 score against 84.1. Galaxy S21 is a newer cellphone, and it is also a bit lighter and somewhat thinner than the Galaxy M21. Both of these phones have the same Android 11 OS. The Galaxy S21 has just a bit better looking screen than Galaxy M21, because although it has a bit smaller screen, it also counts with a slightly better resolution of 1080 x 2400px, much more display brightness and a quite greater count of pixels per screen inch.
The Samsung Galaxy M21 has a better memory for games and applications than Galaxy S21, because although it has just 64 GB internal memory capacity, it also counts with a slot for an SD memory card that admits up to 512 GB. Galaxy S21 counts with a little faster CPU than Galaxy M21, and although they both have a Octa-Core processing unit, the Galaxy S21 also has a greater amount of RAM memory.
The Galaxy M21 counts with a really longer battery performance than Galaxy S21, because it has a 6000mAh battery capacity. The Samsung Galaxy M21 counts with a bit better camera than Samsung Galaxy S21, because although it has a smaller back-facing camera sensor capturing lower quality videos and pictures and a smaller aperture which is worse for capturing photographs and/or video in poorly lited situations, and they both have the same 3840x2160 video definition, the Samsung Galaxy M21 also counts with better video frame rate and a much more megapixels back-facing camera.
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