Compare phones
| Global Score | |
| 76.6 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 11, 10 |
| 2020-05-20 | 2020-03-23 |
| 6.39 x 3.04 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 7.02 ounces | 6.63 ounces |
| Forest green, Midnight gray and Polar white | Midnight blue and Raven black |
| Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 283.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 396 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 8.4 |
| Performance | |
| MediaTek Helio G85 chipset | Exynos 9611 chipset |
| Arm Cortex-A75 and ArmCortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Mali G52 MC2 GPU | Mali-G72 MP3 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.02 | 11.74 |
| Camera | |
| 48.00 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 | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11 | 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 |
| NFC | -- |
| 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 is slightly better than Xiaomi Redmi Note 9, getting a score of 84.1 against 76.6. Both phones in this comparison review come with Android OS (Operating System), but Samsung Galaxy M21 has newer 11 version and Xiaomi Redmi Note 9 has Android 10, providing lots of additional features and enhanced performance. The Samsung Galaxy M21 construction has the same thickness than the Xiaomi Redmi Note 9, but it's a little lighter.
Galaxy M21 features a bit more vivid screen than Xiaomi Redmi Note 9, because although it has a little bit smaller screen, and they both have an equal 1080 x 2340px resolution, the Galaxy M21 also counts with a little higher pixels number per screen inch. The Galaxy M21 counts with a bit better CPU than Xiaomi Redmi Note 9, and although they both have 8 cpu cores, the Galaxy M21 also has a larger amount of RAM memory.
Galaxy M21 shoots a bit better videos and photos than Xiaomi Redmi Note 9, because although it has a tinier aperture, and they both have the same sensor size and a same resolution back camera, the Galaxy M21 also counts with a lot better video resolution. Samsung Galaxy M21 has a bigger storage capacity to install applications and games or saving photos and videos than Xiaomi Redmi Note 9, and although they both have the same internal storage capacity, the Samsung Galaxy M21 also has a slot for an SD memory card that admits up to 512 GB.
Samsung Galaxy M21 features greater battery duration than Xiaomi Redmi Note 9, because it has 6000mAh of battery capacity.
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