Compare phones
| Global Score | |
| 84.1 | 83.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | -- |
| 2020-03-23 | 2019-03-06 |
| 6.26 x 2.96 x 0.35 inches | 6.20 x 2.94 x 0.30 inches |
| 6.63 ounces | 6.10 ounces |
| Midnight blue and Raven black | Black, Blue and Purple |
| Plastic and Plastic | Glass (Corning Gorilla Glass 5) and Metal |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 403 pixels per inch |
| 420 cd/m2 brightness | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.6 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 855 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 640 GPU |
| 9.27 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | 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 (60 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 11.55 | 12.1 |
| 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 and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.3 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 3300mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 5.28 |
| 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Samsung Galaxy M21 is a little bit better than the Xiaomi Mi 9, having an 84.1 score against 83.2. Samsung Galaxy M21's design is newer, but a little heavier and thicker than Xiaomi Mi 9. Xiaomi Mi 9 counts with a bit better performance than Samsung Galaxy M21, and although they both have a Octa-Core processing unit, the Xiaomi Mi 9 also has a higher amount of RAM memory.
The Xiaomi Mi 9 has just a bit better screen than Samsung Galaxy M21, and although they both have the same 1080 x 2340 pixels resolution, the same screen density and a screen with the same size, the Xiaomi Mi 9 also has a brighter screen. Xiaomi Mi 9 features a little bit better camera than Galaxy M21, and although they both have the same resolution back camera, a 0.5 inches sensor and the same video quality, the Xiaomi Mi 9 also has better 60 fps video frame rates and a bigger aperture for better photography and video in low light environments.
The Samsung Galaxy M21 counts with a better storage capacity to store more games and applications than Xiaomi Mi 9, because although it has just 64 GB internal storage capacity, it also counts with a SD memory slot that admits a maximum of 512 GB. The Samsung Galaxy M21 has a very superior battery lifetime than Xiaomi Mi 9, because it has 6000mAh of battery capacity.
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