Compare phones
| Global Score | |
| 84.1 | 78.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 11 |
| 2020-03-23 | 2021-04-28 |
| 6.26 x 2.96 x 0.35 inches | 6.32 x 2.93 x 0.33 inches |
| 6.63 ounces | 6.31 ounces |
| Midnight blue and Raven black | Lake Green, Onyx Gray and Pebble White |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 229.00 |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 411 pixels per inch |
| 420 cd/m2 brightness | 1100 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 9 |
| Performance | |
| Exynos 9611 chipset | MediaTek Helio G95 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A55 and Arm Cortex-A76, 64-bit, 12 nm (Octa-Core 2050 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Arm Mali-G76 MC4 GPU |
| 9.27 | 9.18 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 7.7 |
| Camera | |
| 48.00 MP + 20.00 MP | 64.00 MP + 13.00 MP |
| f/2.00 aperture | f/1.80 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 | -- |
| 11.55 | 9.68 |
| 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 | 5000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Samsung Galaxy M21 has an overall score of 84.1, which is slightly better than the Xiaomi Redmi Note 10S's global score of 78.2. Although it's the best in this comparison review, the Samsung Galaxy M21 is an older, a little bit thicker and just a bit heavier cellphone than the Xiaomi Redmi Note 10S. These phones include the same Android 11 OS (operating system), so they should give you the same OS features.
The Galaxy M21 features a bit superior processing unit than Xiaomi Redmi Note 10S, although it has lesser RAM, they both have a Octa-Core processing unit. The Xiaomi Redmi Note 10S counts with a bit better display than Galaxy M21, and although they both have a display of the same size, the Xiaomi Redmi Note 10S also has a slightly higher resolution of 1080 x 2400px, a really brighter display and a little bit more pixels per screen inch.
Galaxy M21 has a very superior memory to store more apps and games than Xiaomi Redmi Note 10S, and although they both have equal internal storage, the Galaxy M21 also has a slot for an SD memory card that supports up to 512 GB. The Galaxy M21 counts with superior battery life than Xiaomi Redmi Note 10S, because it has a 20% bigger battery capacity.
Galaxy M21 features a superior camera than Xiaomi Redmi Note 10S, although it has a tinier aperture which is not recommended for shooting photographs or video in low light environments and a camera in the back with lot less megapixels.
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