Compare phones
| Global Score | |
| 75 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 9.0 Pie, 8.1 Oreo, 8.0 Oreo, 7.1 Nougat | Android 11 |
| 2017-09-12 | 2021-01-29 |
| 6.12 x 2.98 x 0.29 inches | 5.97 x 2.80 x 0.31 inches |
| 5.82 ounces | 6.03 ounces |
| Black, Gold and Pink | Gray, Phantom pink, Violet and White |
| Metal | Aluminum and Plastic |
| -- | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 5.5 inches | 6.2 inches |
| 1920 x 1080 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 401 pixels per inch | 424 pixels per inch |
| 450 cd/m2 brightness | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2000 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Adreno 506 GPU | Adreno 660 GPU |
| 9.09 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | No SD card slot |
| 10.78 | 10.1 |
| Camera | |
| 12.00 MP + 5.00 MP | 12.00 MP + 10.00 MP |
| f/2.20 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| -- | 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 |
| 9.35 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.1 | 10.7 |
| Battery Life | |
| 3080mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.04 | 5.92 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy S21 has an overall score of 91.8, which is a lot better than the Xiaomi Mi A1's 75 score. These phones have Android OS, but the Galaxy S21 has an older 11 version and Xiaomi Mi A1 has Android 9.0 Pie version. Even though Galaxy S21 is noticeably newer than Xiaomi Mi A1, it's a bit heavier and a little thicker.
Samsung Galaxy S21 counts with a bit better processing power than Xiaomi Mi A1, and although they both have the same number of cores, the Samsung Galaxy S21 also has 4 GB more RAM. The Galaxy S21 counts with just a bit better looking display than Xiaomi Mi A1, because it has much more brightness, a little higher resolution of 1080 x 2400px, a just a little greater display pixel density and a bit larger display.
The Galaxy S21 counts with a much better camera than Xiaomi Mi A1, and although they both have a back facing camera with a 12 MP, the Galaxy S21 also has a lot better video resolution and a larger aperture for better low light captures and video. The Xiaomi Mi A1 counts with slightly more memory for applications, games, photos and videos than Samsung Galaxy S21, because although it has just 64 GB internal memory capacity, it also counts with an external SD slot that supports a maximum of 256 GB.
Samsung Galaxy S21 has greater battery performance than Xiaomi Mi A1, because it has 4000mAh of battery capacity.
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