Compare phones
| Global Score | |
| 78 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| -- | Android 11 |
| 2018-07-27 | 2021-01-29 |
| 6.25 x 2.97 x 0.29 inches | 5.97 x 2.80 x 0.31 inches |
| 5.93 ounces | 6.03 ounces |
| Black, Blue, Gold, Pink and Red | Gray, Phantom pink, Violet and White |
| Aluminum | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6 inches | 6.2 inches |
| 2160 x 1080 pixels | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 402 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 8 GB RAM |
| Adreno 512 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 12.00 MP + 20.00 MP | 12.00 MP + 10.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.34 inches (1/2.9") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.79 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.3 | 10.7 |
| Battery Life | |
| 3010mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 4.96 | 5.92 |
| 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, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy S21 has a score of 91.8, which is much better than the Xiaomi Mi A2's general score of 78. Samsung Galaxy S21's design is newer, but just a little bit heavier and just a bit thicker than Xiaomi Mi A2. The Galaxy S21 counts with just a little better hardware performance than Xiaomi Mi A2, and although they both have a Octa-Core processing unit, the Galaxy S21 also has a larger amount of RAM.
Galaxy S21 features a much better display than Xiaomi Mi A2, because it has a slightly better resolution of 1080 x 2400, a bit greater pixels density and a bit larger screen. The Samsung Galaxy S21 counts with a superior camera than Xiaomi Mi A2, and although they both have a same resolution back camera and a same size aperture, the Samsung Galaxy S21 also has a much bigger back camera sensor providing a much higher image quality and a much better 7680x4320 video definition.
The Galaxy S21's storage capacity for games and applications is just as good as Xiaomi Mi A2's one, both have the same 128 GB internal memory capacity. The Samsung Galaxy S21 features better battery duration than Xiaomi Mi A2, because it has a 4000mAh battery size against 3010mAh.
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