Compare phones
| Global Score | |
| 79 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11, 10 | Android 11, 10 |
| 2020-04-07 | 2020-03-23 |
| 6.53 x 3.02 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 7.37 ounces | 6.63 ounces |
| Aurora blue, Glacier white and Interstellar grey | Midnight blue and Raven black |
| Glass (Corning Gorilla Glass 5) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 249.00 | -- |
| Display / Screen | |
| 6.7 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 393 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 720G SM7125 chipset | Exynos 9611 chipset |
| Kryo 465, 64-bit, 8 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 |
| Adreno 618 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 + 16.00 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 | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) 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 |
| 11.55 | 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 | |
| 5020mAh Li - Polymer 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 |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy M21 has a global score of 84.1, which is just a bit better than Xiaomi Redmi Note 9S's 79 general score. The Samsung Galaxy M21 is a lighter cellphone than the Xiaomi Redmi Note 9S, but both of them are 0.35inches thick. These devices use the same Android 11 OS (operating system).
Galaxy M21 has a little more vivid display than Xiaomi Redmi Note 9S, because although it has a quite smaller display and a little lower 1080 x 2340 pixels resolution, it also counts with a just a bit better quantity of pixels in each inch of display. The Samsung Galaxy M21 counts with a processor that is very similar to Xiaomi Redmi Note 9S's processing unit, both have a 4 GB RAM memory and the same number of cores.
Galaxy M21's storage to install applications and games is very similar to the Xiaomi Redmi Note 9S one, they have equal 64 GB internal memory capacity and an external memory card slot that admits up to 512 GB. The Xiaomi Redmi Note 9S and the Galaxy M21 both have quite similar cameras, and although the Galaxy M21 has a tinier camera aperture which is not good for low light captures, they both have a camera with a 48 mega-pixels, a 0.5 inches back camera sensor, the same 30 frames per second video frame rates and the same 3840x2160 (4K) video quality.
Samsung Galaxy M21 has improved battery duration than Xiaomi Redmi Note 9S, because it has a 20% larger battery capacity.
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