Compare phones
| Global Score | |
| 84.1 | 79 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 11, 10 |
| 2020-03-23 | 2020-04-07 |
| 6.26 x 2.96 x 0.35 inches | 6.53 x 3.02 x 0.35 inches |
| 6.63 ounces | 7.37 ounces |
| Midnight blue and Raven black | Aurora blue, Glacier white and Interstellar grey |
| Plastic and Plastic | Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 249.00 |
| Display / Screen | |
| 6.4 inches | 6.7 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 403 pixels per inch | 393 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 720G SM7125 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Adreno 618 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 + 20.00 MP | 48.00 MP + 16.00 MP |
| f/2.00 aperture | f/1.80 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 |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (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 | |
| 6000mAh Li - Polymer Battery | 5020mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Galaxy M21 is slightly better than Xiaomi Redmi Note 9S, with a global score of 84.1 against 79. The Galaxy M21 design has the same thickness than Xiaomi Redmi Note 9S, but it's somewhat lighter. Both devices in our current comparison have the same Android 11 OS (operating system), so you shouldn't notice any difference regarding that.
The Xiaomi Redmi Note 9S has a CPU that is very similar to the processor in Galaxy M21, both have a 4 GB RAM and the same number of cores. The Galaxy M21 counts with just a bit better looking screen than Xiaomi Redmi Note 9S, because although it has a little bit smaller display and a little lower resolution of 1080 x 2340px, it also counts with a quite greater screen pixel density.
Xiaomi Redmi Note 9S's storage capacity for applications, games, photos and videos is very similar to the Samsung Galaxy M21 one, both of them have a slot for SD memory cards that supports up to 512 GB and equal internal memory. The Galaxy M21 counts with improved battery duration than Xiaomi Redmi Note 9S, because it has a 6000mAh battery size against 5020mAh.
Xiaomi Redmi Note 9S has a camera that is very similar to the Galaxy M21 one, and although the Xiaomi Redmi Note 9S has a bigger aperture to capture better photos and video in poorly lited situations, they both have the same 3840x2160 video resolution, a same resolution back camera, a same size back camera sensor and the same video frame rate.
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