Compare phones
| Global Score | |
| 83.3 | 76.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10, 9.0 Pie, 8.0 Oreo | Android 10 |
| 2018-06-05 | 2020-06-29 |
| 6.10 x 2.94 x 0.30 inches | 6.61 x 3.02 x 0.32 inches |
| 6.17 ounces | 6.81 ounces |
| Black, Blue, Gold and White | Black |
| Glass (Corning Gorilla Glass 5) | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 6.2 inches | 6.5 inches |
| 2248 x 1080 pixels | 1600 x 720 pixels |
| AMOLED | IPS LCD |
| 402 pixels per inch | 270 pixels per inch |
| 600 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.6 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 845 SDM845 chipset | Mediatek Helio P35 chipset |
| Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Adreno 630 GPU | PowerVR GE8320 GPU |
| 9.63 | 9.27 |
| Storage | |
| 256 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 9.84 |
| Camera | |
| 12.00 MP + 20.00 MP | 16.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 56.00mm focal length | -- |
| 0.39 inches (1/2.55") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | -- |
| 9.9 | 9.35 |
| 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 |
| 6.7 | 6.7 |
| Battery Life | |
| 3400mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.36 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Xiaomi Mi 8 is a bit better than Samsung Galaxy A21, having an 83.3 score against 76.1. Both of these phones have the same Android 10 OS (operating system), so both of them should provide all the same operating system features. Xiaomi Mi 8's body is a little bit thinner and just a little bit lighter than Samsung Galaxy A21, despite of the fact that it was released 2 years before.
Xiaomi Mi 8 counts with a much better looking screen than Galaxy A21, because although it has a quite smaller display, it also counts with a much better resolution of 1080 x 2248 and a higher display density. The Xiaomi Mi 8 features a little better processing power than Galaxy A21, and although they both have the same number of cores, the Xiaomi Mi 8 also has more RAM memory.
Xiaomi Mi 8 counts with a much better memory to install games and applications than Samsung Galaxy A21, because although it has no SD card slot, it also counts with 256 GB internal memory capacity. Xiaomi Mi 8 counts with a little bit better camera than Samsung Galaxy A21, because although it has a camera with a much worse 12 mega pixels resolution, and they both have a same size aperture, the Xiaomi Mi 8 also counts with a bigger back-facing camera sensor providing a higher image quality and a much higher video resolution.
Samsung Galaxy A21 features longer battery life than Xiaomi Mi 8, because it has a 4000mAh battery capacity.
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