Compare phones
| Global Score | |
| 76.1 | 83.3 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | Android 10, 9.0 Pie, 8.0 Oreo |
| 2020-06-29 | 2018-06-05 |
| 6.61 x 3.02 x 0.32 inches | 6.10 x 2.94 x 0.30 inches |
| 6.81 ounces | 6.17 ounces |
| Black | Black, Blue, Gold and White |
| Plastic and Plastic | Glass (Corning Gorilla Glass 5) |
| -- | Scratch-Resistant Glass |
| $ 194.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.2 inches |
| 1600 x 720 pixels | 2248 x 1080 pixels |
| IPS LCD | AMOLED |
| 270 pixels per inch | 402 pixels per inch |
| -- | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 8.6 |
| Performance | |
| Mediatek Helio P35 chipset | Qualcomm Snapdragon 845 SDM845 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor |
| 3 GB RAM | 6 GB RAM |
| PowerVR GE8320 GPU | Adreno 630 GPU |
| 9.27 | 9.63 |
| Storage | |
| 32 GB internal memory | 256 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 9.84 | 13.3 |
| Camera | |
| 16.00 MP + 13.00 MP | 12.00 MP + 20.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 56.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.39 inches (1/2.55") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.35 | 9.9 |
| 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 | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3400mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.36 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| 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 | -- |
Comparison review
The Xiaomi Mi 8 has a score of 83.3, which is just a bit better than Samsung Galaxy A21's score of 76.1. Even though the Xiaomi Mi 8 is notably older than Samsung Galaxy A21, it's design is just a little bit lighter and just a little bit thinner. These phones use the same Android 10 operating system.
The Xiaomi Mi 8 has a more vivid screen than Galaxy A21, because although it has a bit smaller screen, it also counts with a much higher 1080 x 2248 pixels resolution and a greater amount of pixels per inch of display. The Xiaomi Mi 8 counts with a bit more powerful CPU than Galaxy A21, and although they both have a Octa-Core CPU, the Xiaomi Mi 8 also has more RAM memory.
The Xiaomi Mi 8 takes slightly better videos and photos than Samsung Galaxy A21, because although it has a camera with much less mega-pixels resolution, and they both have a same size aperture, the Xiaomi Mi 8 also counts with a way higher (4K) video resolution and a bigger camera sensor shooting higher quality photographs and videos.
The Xiaomi Mi 8 has much more storage capacity for apps and games than Galaxy A21, because although it has no SD extension slot, it also counts with more internal memory. The Samsung Galaxy A21 has greater battery life than Xiaomi Mi 8, because it has an 18% greater battery size.
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