Compare phones
| Global Score | |
| 78.2 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11 | Android 11, 10 |
| 2021-04-28 | 2020-03-23 |
| 6.32 x 2.93 x 0.33 inches | 6.26 x 2.96 x 0.35 inches |
| 6.31 ounces | 6.63 ounces |
| Lake Green, Onyx Gray and Pebble White | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 229.00 | -- |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 411 pixels per inch | 403 pixels per inch |
| 1100 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 9 | 8.4 |
| Performance | |
| MediaTek Helio G95 chipset | Exynos 9611 chipset |
| Arm Cortex-A55 and Arm Cortex-A76, 64-bit, 12 nm (Octa-Core 2050 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Arm Mali-G76 MC4 GPU | Mali-G72 MP3 GPU |
| 9.18 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 7.7 | 11.74 |
| Camera | |
| 64.00 MP + 13.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| -- | 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, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5000mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy M21 has a global score of 84.1, which is slightly better than Xiaomi Redmi Note 10S's 78.2 general score. Even though the Galaxy M21 is a better cellphone than the Xiaomi Redmi Note 10S, it must be noted that it is also an older, a little thicker and a little heavier cellphone. Both devices in our current comparison work with the same Android 11 OS, so you shouldn't see any differences regarding OS features.
The Xiaomi Redmi Note 10S has a little sharper display than Samsung Galaxy M21, and although they both have a display with the same size, the Xiaomi Redmi Note 10S also has a just a little better pixels density, a way brighter screen and a quite better 1080 x 2400 pixels resolution. Samsung Galaxy M21 features a much greater memory capacity for games and applications than Xiaomi Redmi Note 10S, and although they both have the same internal storage capacity, the Samsung Galaxy M21 also has a slot for an external memory card that admits a maximum of 512 GB.
The Galaxy M21 counts with a bit faster CPU than Xiaomi Redmi Note 10S, although it has a lower amount of RAM, they both have 8 CPU cores. The Samsung Galaxy M21 features better battery lifetime than Xiaomi Redmi Note 10S, because it has a 20 percent bigger battery size. Samsung Galaxy M21 has a better camera than Xiaomi Redmi Note 10S, although it has a much less mega-pixels resolution back camera and a smaller diafragm aperture which is not recommended for low light photography.
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